Bài 3: Chọn đáp án đúng. 1. I would have visited you before if there _____ quite a lot of people in your house. A. hadn't B. hadn't been C. wouldn't be D. wasn't 2. If you had caught the bus, you _____ late for work. A. wouldn't have been B. would have been C. wouldn’t be D. would be 3. If I _____, I would express my feelings. A. were asked B. would ask C. had been asked D. asked 4. If _____ as I told her, she would have succeeded. A. she has done B. she had done C. she does D. she did 5. Will you be angry if I _____ your pocket dictionary? A. stole B. have stolen C. were to steal D. steal 6. You made a mistake by telling her a lie. It _____ better if you _____ to her. A. would have been / hadn't lied B. would be / didn't lie C. will be / don't lie D. would be / hadn't lied 7. John would be taking a great risk if he _____ his money in that business. A. would invest B. invested C. had invested D. invests 8. She wouldn't have given them all that money if we _____ her to. A. wouldn’t advise B. won't advise C. hadn't advised D. didn't advise 9. If the tree hadn't been so high, he _____ it up to take his kite down. A. could have climbed B. climb C. is climbing D. climbed 10. If the wall weren't so high, he _____ it up to take his ball down. A. climbed B. could climb C. is climbing D. climb 11. If I _____ her phone number, I _____ her last night A. had known / could have phoned B. knew / would have phoned C. know / can phone D. knew / could phone 12. If he ______ the truth, the police wouldn’t arrest him. A. tells B. told C. had told D. would tell 13. If you press that button what _____? A. would happen B. would have happened C. will happen D. happen 14. She says if she _____ that the traffic lights were red she _____. A. had realized / would stop B. realized / could have stopped C. has realized / stopped D. had realized / would have stopped 15. I am very thin. I think, if I _____ smoking, I might get fat. A. stop B. had stopped C. will stop D. stopped 16. If I _____ that yesterday, I _____ them. A. had discovered / would inform B. had discovered / would have informed C. had discovered / could inform D. discovered / can inform 17. If you _______ to the course regularly, they ________ a certificate last year. A. go / gave B. go / give C. had gone / would have given D. went / would give 18. I think he is not at home. If he _____ in, he ______ the phone. A. was / answered B. were / would answer C. were / would have answered D.had been / would have answered 19. If I ______ in London now, I could visit British Museum. A. were B. had been C. have been D. would be 20. If Columbus _______ money from Queen Isabella, he _______ across the Atlantic. A. do not receive / could not sail B. had not received / might not have sailed C. did not receive / might not have sailed D. would not receive / might not sail