55. Without water and air, people die. A. People will die if there is no water and air. B. If there were no water and air, people would die. C. People will not die if there is no water and air. D. If there were no water and air, people would not die. 56. If you_____________ that plane, you _____________ dead now. A. had caught / would have been B. caught / would be C. had caught / would be D. catch / will be 57. I would have said "good bye" to your brother if he_____________ there. A. could be B. had been C. will be D. will have been 58. If you_____________ what Nam is doing, you _____________ very surprised A. had known / would be B. knew / would be C. knew / would have been D. knew / will be 59. I _____________ very happy if there _____________ a good film on channel 9 last night. A. would be / had been B. would have been / would be C. would have been / had been D. had been / had been 60. If you see Tom, _____________ you mind _____________ him to get in touch with me? A. will / reminding B. will / to remind C. would / reminding D. would / to remind 61. If the train is late, we_____________ to the office. A. walk B. will walk C. would walk D. walks 62. She _____________if she has time. A. calls B. would call C. will call D. calling 63. If it _____________too much, I will buy the smaller one. A. costs B. will cost C. would cost D. cost 64. If the class _____________full, we will find another one. A. are B. will be C. were D. is 65. What will we do if the taxi_____________? A. don’t come B. didn’t come C. doesn’t come D. had not come 66. If it snowed this summer, we _____________skiing. A. goes B. will go C. would go D. go 67. If you drove more carefully, you _____________so many accidents. A. would not have B. will not have C. wouldn’t have had D. has 68. If he_____________ up earlier, he’d get to work on time. A. gets B. will get C. got D. had got 69. I would tell you more about it if we _____________more time. A. has B. will have C. have D. had 70. If I _____________you, I wouldn’t worry about going to university. A. am B. be C. were D. had been 71. If you _____________any money, I’d give you some. A. hadn’t had B. haven’t had C. don’t have D. didn’t have 72. You’d earn more money if you _____________more products. A. to sell B. sell C. sold D. will sell 73. If I _____________so busy yesterday, I would have visited you. A. were not B. wasn’t C. aren’t D. hadn’t been 74. If you had seen the film, you_____________ it. A. will enjoy B. would have enjoyed C. would enjoy D. enjoyed 75. She would have gone to the university if she_____________ the opportunity. A. has B. will have C. had had D. had 76. If he had been more careful, he _____________an accident. A. would not have had B. will not have C. does not have D. would not have 77. If you’d stayed at home, there _____________any trouble. A. would not be B. will not be C. is not D. would not have been