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71. If we will reduce the speed of population growth, there will be less pressure on the earth. -> a Should be: "If we reduce the speed of population growth, there will be less pressure on the earth." 72. Unless we leave a bowl of water under the sun, it will evaporate. -> No mistake 73. If we continue to use fuels at the current rate, we would soon have to face a fuel crisis. -> No mistake 74. If I am 10 centimeters taller, I would play basketball. -> No mistake 75. If the doctors could find in the remedy, a lot of people would be saved. -> b Should be: "If the doctors could find a remedy, a lot of people would be saved." 76. If she bought that house now, she ran out of money. -> c Should be: "If she buys that house now, she will run out of money." 77. What you would do if you could speak French well? -> d Should be: "What would you do if you could speak French well?" 78. If I had known he is not at home, I wouldn't have gone all the way to his house. -> b Should be: "If I had known he was not at home, I wouldn't have gone all the way to his house." 79. If I had known that the road were flooded, I would never have taken that way. -> b Should be: "If I had known that the road was flooded, I would never have taken that way." 80. If I were you, I will go to the dentist's and have the tooth checked. -> a Should be: "If I were you, I would go to the dentist's and have the tooth checked." 81. If you hadn't left the car unlocked, it wouldn't have be stolen. -> c Should be: "If you hadn't left the car unlocked, it wouldn't have been stolen." 82. What would happen because I pressed that red button? -> No mistake 83. If the weather is fine today, we would go to the beach. -> a Should be: "If the weather is fine today, we will go to the beach." 84. If you will study harder, you will surely pass the coming exams with good results. -> a Should be: "If you study harder, you will surely pass the coming exams with good results." 85. If the weather weren't too bad, we would to go swimming. -> c Should be: "If the weather weren't too bad, we would go swimming." 86. If he weren't too old, he would apply to the job as a war reporter. -> No mistake 87. If drivers obeyed the speed limit, fewer accidents occur. -> b Should be: "If drivers obeyed the speed limit, fewer accidents would occur."