giúp mình vs chỉ cần đáp án thôi ạ!!! 21. You __________ be selfish like that. Don’t just think of your own benefits. A. should B. shouldn’t C. haven’t to D. don’t have to 22. My car broke down yesterday, so I __________ go to work by bus. A. had to B. must C. should D. could 23. Linh _________ hurry because the meeting was 15 minutes late. A. hasn’t to B. hadn’t to C. doesn’t have to D. didn’t have to 24. Leave early so that you _______ miss the train. A. didn’t B. won’t C. shouldn’t D. mustn’t 25. You __________ talk loudly in public as it is impolite. A. shouldn’t B. hadn’t better C. had better not D. Both A & C 26. You _________ fly to London this afternoon if you don’t mind changing planes in Paris. A. must B. have to C. can D. ought to 27. There are many mistakes in this exercise. I _________ go over it again. A. will have to B. am able to C. would D. could 28. _________ I open the door for you? A. Would you like that B. Do you want that C. Will D. Shall 29. There’s the waitress. I ___________ ask her for the hill. A. will B. shall C. am able to D. could 30. His eyesight was so poor that he _________ read the signposts. A. Shouldn’t B. Hadn’t to C. Couldn’t D. Can’t Choose the underlined part that need correcting in each sentence below. 31. In (A) Japan, you should (B) always to remove (C) your shoes when entering (D) a private house. 32. As (A) a child, I must (B) go to sleep (C) before 10 p.m, after finishing (D) all my homework. 33. You don’t have (A) to worrry(B) so(C) much as everything will (D) be ok. 34. Must (A) I carry the(B) bag for you? It looks (C) heavy (D).= 35. In your country, you have (A) to clean the (B) house very carefully (C) to welcome Tet holiday, haven’t (D) you?