(1) cho dạng đúng của động từ

21. I wish the weather.........warmer now (be)

22. They wish he.........them next week (telephone)

23. He wishes you.......him in the future (help)

24. She wishes the mail.........soon (come)

25. They wish she........the arrangements for the meeting next week (make)

26. We wish they.......or we will miss the bus (hurry)

27. You wiah the door.........(open)

28. He wishes he.........us the book (show)

29. They wish we........for them (wait)

30. I wish you........to me (to write)

31. She wishes you........her (to join)

32. He wishes he..........ready (to be)

33. She wishes she........how to sing (to know)

34. They wish it.........warmer (to be)

35. Does he wish he.........younger (to be)

36. She wishes she........the arrangements earlier (make)

37. They wish they.......the appoitment (not forget)

38. We wish it.......yesterday (not snow)

39. We always wish we.........fluent in other languages (be)

40. I wish I.........near my school (live)

giúp mk vs ạ mk cần gấp

(2) Cho điện trở \(R_1=20\Omega\) được mắc nối tiếp với 1 biến trở được làm bằng chất có điện trở suất là \(0,5.10^{-6}\Omega\) m, có chiều dài là 100m và có tiết diện \(3mm^2\). Được mắc vào mạch có hiệu điện thế 40V.

a) Vẽ sơ đồ mạch điện và tính cường độ dòng điện trong mạch

b) Hãy tính công suất trên biến trở và điện năng tiêu thụ của mạch trong 5 phút

giúp mk vs ạ mai mk hc rồi

(4) cmr: pt sau luôn có nghiệm ∀m

a) \(x^2+2\left(m-1\right)x-2m-3=0\)

b) \(x^2+\left(2m-1\right)x+2m-2=0\)

c) \(x^2-2\left(m+1\right)+2m-2=0\)

d) \(x^2-2\left(m+1\right)x+2m=0\)

e) \(x^2-2mx+m-7=0\)

f) \(x^2-2\left(m-1\right)x-3-m=0\)

giúp mk vs ạ mk cần gấp

(3) cho pt bậc hai: \(x^2-2x+2m-1=0\). xác định m để pt có:

a) 2 nghiệm

b) 2 nghiệm phân biệt

c) có nghiệm kép

d) vô nghiệm

giúp mk vs ạ mk cần gấp

(2) giải các pt sau bằng công thức nghiệm (hoặc công thức nghiện thu gọn)

1) \(x^2-11x+30=0\)

2) \(x^2-x-20=0\)

3) \(x^2+14x+24=0\)

4) \(3x^2+8x-2=0\)

giúp mk vs ạ mk đang cần gấp

(4) Underline the mistake and rewrite the correct sentence:

1. She wish she could speak English well

=>...................

2. I wish it didn't rained now

=>......................

3. I wish I was the doctor to save people

=>......................

4. I wish I have more time to look after my family

=>......................

5. He wishes it didn't rain yesterday

=>..................

6. I wish my father gives up smoking in the near future

=>............................

7. I wish I studied very well last year

=>....................

8. I wish you will come to my party next week 

=>........................

9. I wish it stops raining now

=>....................

10. I wish you are my sister

=>........................

giúp mk vs ạ mk đang cần gấp

3) Put the verbs in brakets in the correct form:

1. I wish he...........here now (be)

2. She wishes you.........better (feel)

3. I wish that you.........here yesterday (be)

4. I wish he..........the work tonight (finish)

5. We wish you..........tomorrr ơ (come)

6. She wishes she.........the window last night (open)

7. I wish you..........earlier yesterday (leave)

8. We wish they.........with us last weekend (come)

9. They wish he........with them the next day (come)

10. They wish we........them some food yesterday (give)

11. We wish you.......yesterday (arrive)

12. I wish I........the answers (not lose)

13. We wish you...........what to do last year (know)

14. I wish that he.........us next day (visit)

15. She wishes that she............at home now (be)

16. I wish I..........the new (hears)

giúp mk vs ạ mk đang cần gấp

1. Combine each pair of sentences using a relative pronoun or relative adverb:

11) The boy is my cousin. You make fun of him

12) THe student is from China. He sits next to me

13) I thanked the woman. This woman had helped me

14) The proffessor is excellent. I am talking his course

15) Mr. Smith said he was too busy to speak to me. I had come to see him

16) I saw a lot of people and horses. They went to market

17) Tom has three sisters. All of them are married.

18) I recently went back to Paris. It is still as beautiful as a pearrl.

19) I recently went back to Paris. I was born in Paris nearrly 50 years ago

20) Do you know the music? It is played on the radio

giúp mk vs ạ