47. Peter/ suggest/ go/ the seaside/ summer holiday.
A. Peter suggest going to the seaside this summer holiday.
B. Peter suggest to go to the seaside this summer holiday.
C. Peter suggests going to the seaside this summer holiday.
D. Peter suggests to go to the seaside this summer holiday.
48. The students/ study/ for exam/ now.
A. The students is studying for their exam now.
B. The students are studying for their the exam now.
C. The students are study for their exam now.
D. The students are studying for their exam now.
49.disappointed / film / entertaining / expected
A.We were disappointed as the film was more entertaining than we expected. B.We felt disappointed as the film was less entertaining than we had expected.
C. We felt disappointed just because the film was entertaining as we expected.
D. We were disappointed, so the film was more entertaining than we had expected.
50. It / important / keep/ environment / clean.
A. It’s very important keeping the environment clean.
B. It’s very important to keep an environment clean.
C. It’s very important to keep the environment to clean.
D. It’s very important to keep the environment clean.

( y + 10) + ( y + 11) + ( y +12) +….+ ( y + 38) = 197

46. We / glad / see our friends after / long time.

A. We are glad seeing our friends after a long time.

B. We are glad of seeing our friends after a long time.

C. We are glad to see our friends after a long time.

D. We are glad to see our friends after such long time.

47. How long / it / you / get / your school bus?

A. How long does it take you to get to your school bus?

B. How long does it spend you to get to your school bus?

C. How long is it take you to get to your school bus?

D. How long does it take you get to your school bus?

48. While Mr. While / work / garden / Mrs. White / cook / kitchen.

A. While Mr. White was cooking in the garden, Mrs. White cooked in the kitchen.

B. While Mr. White cooked in the garden, Mrs. White was cooking in the kitchen.

C. While Mr. White was cooking in the garden and Mrs. White was cooking in the kitchen.

D. While Mr. White was cooking in the garden, Mrs. White was cooking in the kitchen.

49. I / happy / know / you / pass / entrance exam / become / student.

A. I am happy know that you have passed your entrance exam become a student.

B. I am happy to know that you have passed your entrance exam to become a student.

C. I am happy to know that you had passed your entrance exam to become a student.

D. I will be happy to know that you have passed your entrance exam to become a student.

50. Please / me know / you / able / finish work / time / I / ask / other man / help.

A. Please let me know whether you’ll be able to finish work on time or I will ask the other man for help.

B. Please let me know whether you be able to finish work on time or I will ask the other man for help.

C. Please let me know whether you’ll be able to finish work on time and I will ask the other man for help.

Please let me to know whether you’ll be able to finish work on time or I will ask the other man for help

41. Their teacher gave them some more exercises on protecting the environment.

A.They were given some more exercises on protecting the environment with their teacher.

B.They were given some more exercises on protecting the environment by their teacher.

C.They will be given some more exercises on protecting the environment by their teacher.

D.They have been given some more exercises on protecting the environment by their teacher.

42. I’m afraid I haven’t got time to listen to you.

      A. If only I had time to listen to you. B. I wish I had time to listen to you.

C. I wish I have time to listen to you. D. Both A and B are correct.

43. I haven’t seen that man here before.

A. It’s the first time I have seen that man. B. It’s the first time I saw that man.

C. It’s the first time I see that man. D. It’s the first time that man I have seen.

44. “I’m leaving for Ha Noi tomorrow” Jane said to me.

A. Jane told me that she was leaving for Ha Noi the next day.

B. Jane said she is leaving for Ha Noi the following day.

C. Jane told she was leaving for Ha Noi the next day.

D. She said I was leaving for Ha Noi the next day.

45. You are in this mess right now because you didn't listen to my advice in the first place.

A. If you had listened to my advice in the first place, you wouldn't have been in this mess right now.

B. If you listened to my advice in the first place, you wouldn't be in this mess right now.

C. If you listen to my advice in the first place, you will not be in this mess right now.

D. If you had listened to my advice in the first place, you wouldn't be in this mess right now.

một đoạn mạch gồm 3 điện trở r1 = 3 ôm r2 = 5 ôm r3 = 7 ôm được mắc nối tiếp với hiệu điện thế 120V
1) tính điện trở tương đương của đoạn mạch