Giúp em với ạ 1. What would happen if I ______ that red button? A. press B. had pressed C. pressed D. presses 2. We ______good health if we do morning exercises. A. would get B. will get C. get D. would have got 3. If you __________ more carefully, you wouldn’t have had so many accidents A. had driven B. drove C. drive D. driven 4. I will lend them some money if they_____ me. A. had asked B. asked C. will ask D. ask 5. If you had not been so busy, I ________ you how to play. A. would show B. had shown C. would have shown D. will show 6. Unless we________throwing garbage into the river, it will be polluted. A. will stop B. won’t stop C. don’t stop D. stop 9. If sombody ______ in here with a gun, I’d be very frightened. A. had walked B. walks C. would walk D. walked 10.If you had not been so busy, I ________ you how to play. A. would show B. would have shown C. had shown D. will show 11.If he studies a lot, he_____ the exam. A. will pass B. would pass C. would have passed D. pass 12. If we had known who he was, we_____ him to speak at our meeting. A. would have invited B. have invited C. will invite D. would invite 13.If the weather ________ fine tomorrow, we will have our biology lesson outdoors. * A. will have been B. will be C. would be D. is 14.Had I had some more money, I _______ that book. A. would not have bought B. would have bought C. will buy D. would buy 15.What would Tom do if he _________the truth? A. knew B. would know C. has know D. knows 16. If I_____ that mistake again, my teacher will get angry with me. A. had made B. make C. made D. makes 17.We will go skiing if it ______this winter. A. snows B. will snow C. snowed D. is snowing 16. If I_____ in your place, I would accept Mr. Anderson’s invitation. A. were B. was C. am D. be 17.If we are not busy this weekend, we________ the new fruit farm in the countryside * A. visited B. would have visited C. is D. would visit 18. If I_____ enough money, I would buy a house. A. had B. will have C. have D. had had 19 ________you, I would think twice about that decision. It could be a bad move. A. If I am B. If I had been C. Were I D. Should I be 20. If I spoke English, my job_____ a lot easier. A. would be B. will be C. were D. was 21. If I had wings, I_________take an airplane to fly home. A. didn't have to B. won't have to C. will have to D. wouldn't have to 22. I’m sure Sue _____ if you explained the situation to her A. should understand B. understood C. would understand D. will understand 23. I could have understood him if he ___________ more slowly. A. spoke B. speaks C. would speak D. had spoken 24. If I …… you ,I wouldn’t buy that coat A. am B. was C. would be D. were 25.Tam would read more if he ______more time . A. would have B. had C. have D. has 26. _________if you take a map. A. You would get lost B. You won’t get lost C. You’ll get lost D. You would have got lost 27.If Tom is late again, he _____his job. A. will lose B. lost C. loses D. would lose 28.If the weather is nice tomorrow, we _______fishing. A. would go B. went C. will go D. go 29. I would have bought a new bicycle if I ______ enough money. A. have had B. had had C. would have D. had 30. If someone ____ into the store, smile and say “ May I help you?” A. came B. will come C. comes D. would come