giúp em với ạ

giúp mình bài 20,21 với ạ

chia động từ

17. Before he died, he (be)…………....................…………..ill for several days
18. At this time next Sunday, they (play) ..................................................... soccer.
19-20. The dog (attack)............................. Mr Pitt when he (walk)...................... along quietly yesterday.
21. By last year, twenty schools in this province (be)…………..built
22. A: Why do you want all the furniture out of the room?
B: Because I (wash) ......................... the carpet. It’s impossible to do it unless you take off
everything first.
23. If you leave your keys with the hall porter, he (take) ............................. the car round to the garage.
24. I think many natural resources (disappear) ..................................... at the end of the century.
25. No matter what happens next I (help) ..................................... you
26. Many people believe the first car running on the sea water (appear) ...............
27. When I grow up, I (be) .......................................... a scientist
28. What (you/ do) .................................................. at this time tomorrow?
29. Do you have to carry so much stuff on your back?
Yes, we do. We (camp) ............................................................ out today.
30. She (take) ......................................... a job overseas, but she had to stay at home because her parents’
sudden death.
31. Soon, people (spend) ........................................ most of the time at home.
32. I think that everything (be) ...................... ready for the project procedure by the end of next month.
33. They will soon get used to (use) .................................... chopticks in Vietnamese meals.
34. Don't phone between 7 and 8. We (have) …………............................ dinner then.
35. Phone me at 8 o'clock. We (finish) ........................................... dinner then.
35. After he (complete) ................................his English course, he went to England to continue his study.
36-37. The Chinese (make) ..........................spaghetti dishes for a long time before Marco Polo (bring)
................................ it back to Italy..
38-39. In the past, the trip (be) ................................very rough and often dangerous, but things
(change) ...................................... a great deal in the last hundred and fifty years
40. The train (arrive) ............................................... at the station half an hour ago.
41. They (install) …………………………… the air conditioner at 7 pm tomorrow.
42. I am afraid that I (not go) ………………………….. to the party tonight.
43. His father left him £10,000, but he lives so luxuriously that he (spend) ……………………… it all
before he’s 30.
44. It (rain) ............................................................. all day!
45. He is an expert in art history. He (work) ……………………………………. in a museum for ten years
and he loves his job.
46. By the time he came home, the children (sleep) …………………………………… for hours.
47. I (try) ………………………………….to save money, but I haven’t succeeded.
48. He (work) ……………………………………. for hours, and the house is finally clean.
49. We (finish) ……………………………………………. our preparations by the time the cooking
competition began
50. They (repair) …………………………… this road by the time we came back last suday

Chia động từ trong ngoặc

17. Before he died, he (be)…………....................…………..ill for several days
18. At this time next Sunday, they (play) ..................................................... soccer.
19-20. The dog (attack)............................. Mr Pitt when he (walk)...................... along quietly yesterday.
21. By last year, twenty schools in this province (be)…………..built
22. A: Why do you want all the furniture out of the room?
B: Because I (wash) ......................... the carpet. It’s impossible to do it unless you take off
everything first.
23. If you leave your keys with the hall porter, he (take) ............................. the car round to the garage.
24. I think many natural resources (disappear) ..................................... at the end of the century.
25. No matter what happens next I (help) ..................................... you
26. Many people believe the first car running on the sea water (appear) ...............
27. When I grow up, I (be) .......................................... a scientist
28. What (you/ do) .................................................. at this time tomorrow?
29. Do you have to carry so much stuff on your back?
Yes, we do. We (camp) ............................................................ out today.
30. She (take) ......................................... a job overseas, but she had to stay at home because her parents’
sudden death.
31. Soon, people (spend) ........................................ most of the time at home.
32. I think that everything (be) ...................... ready for the project procedure by the end of next month.
33. They will soon get used to (use) .................................... chopticks in Vietnamese meals.
34. Don't phone between 7 and 8. We (have) …………............................ dinner then.
35. Phone me at 8 o'clock. We (finish) ........................................... dinner then.
35. After he (complete) ................................his English course, he went to England to continue his study.
36-37. The Chinese (make) ..........................spaghetti dishes for a long time before Marco Polo (bring)
................................ it back to Italy..
38-39. In the past, the trip (be) ................................very rough and often dangerous, but things
(change) ...................................... a great deal in the last hundred and fifty years
40. The train (arrive) ............................................... at the station half an hour ago.
41. They (install) …………………………… the air conditioner at 7 pm tomorrow.
42. I am afraid that I (not go) ………………………….. to the party tonight.
43. His father left him £10,000, but he lives so luxuriously that he (spend) ……………………… it all
before he’s 30.
44. It (rain) ............................................................. all day!
45. He is an expert in art history. He (work) ……………………………………. in a museum for ten years
and he loves his job.
46. By the time he came home, the children (sleep) …………………………………… for hours.
47. I (try) ………………………………….to save money, but I haven’t succeeded.
48. He (work) ……………………………………. for hours, and the house is finally clean.
49. We (finish) ……………………………………………. our preparations by the time the cooking
competition began
50. They (repair) …………………………… this road by the time we came back last suday

Chia động từ

23. We (return) ........................................................... when you get back.
24. We decided to go home by taxi because all the bus (leave) ..................................
25. He (work) ..................................... on Sundays so that he can earn money to pay his tuition.
26. I’m very fond of Jane but I (not see)………..................……….much of her lately.
27. I never (see)……....................................…….anyone more beautiful than your wife.
28. I (meet)………….................……..your husband this afternoon at the station.
29. This one of the best books that I (ever read)…………..............……….
30. My teacher wasn’t at home when I arrived. He (just go)……........................................ out
31. The Earth (circle) .................................. the sun once every 365 days.
32. I (do) ............................................... my homework when he phoned me last night.
33. They (wait) .................................... for me at 7 o’clock last night.
34. By the time the police arrived, the house (be) ………............................….. burned down.
35. He (get) ...................................... a lot of money if he works harder.
36. Many people (move) ………........................…….. to the new place before the storm occurred.