1. If that hat costs much, I ……………a small one.    A. would have bought        B. will buy     C. bought                    D. would buy. 2.  If you …………more carefully,you wouldn’t have had so many accidents. A. drive                                  B. drove                      C. had driven              D. driven 3. If I spoke English, my job …………………a lot easier. A. was                                    B. were                        C. will be                     D. would be 4. If he ……………. to London  yesterday, he  …………. his old friend A. went / would meet                                                            B. go / would meet C. had gone / would have met                                               D. went / would have met 5. I will lend them some money If they ……………. me. A. ask                         B. will ask                   C. asked                      D. had asked 6. 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 7. My dog will bark if it ……………. any strange sound. A. hear                       B. hears                       C. heard                      D. had heard. 8. If I …………. enough money,I will buy a house. A. had                        B. had had                  C. will have                 D. have 9. If you ………….. away, I will send for a policeman. A. not go                    B. don’t go                  C. hadn’t gone            D. didn’t go 10. If I  ………in your place, I would accept Mr Anderson’s invitation. A. were                     B. am                           C. be                            D. was 11. What ……….. we do if they don’t come tomorrow? A. would                    B. will                         C. did                          D. had 12. If I ……………. you, I would tell the truth. A. is                            B. am                           C. were                        D. was 13. If I had enough time now, I ……….. to my parents. A. would write                       B. write                       C. will write                D. wrote 14. It’s too bad Helen isn’t here. If she ……….. here, she …….. what to do. A. is / will know                                             B. was / knows C. were / would know                                               D. are / would have known 15. If she …………. late again, she will lose her job. A. come                       B. came                       C comes                      D. had come  chỉ giúp mình các câu đó thuộc câu điều kiện mấy nhé cám ơn nhìu