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81. Only when ______ in 1918, ______ happily back to work. A. the war was overhe went B. was the war overdid he go C. the war was overdid he go D. was the war overhe went 82. --Who telephoned just now? --Sorry. I couldnt ______ the voice. A. recognize B. realize C. know D. understand 83. He had ______ in finding Mr. Greens house. A. many difficulties B. many difficulty C. much difficulties D. much difficulty 84. I dont want to _______ money on such books. A. cost B. pay C. spend D. take 85. --Thank you for your help. --________. A. All right B. Thats right C. Youre right D. Thats OK 86. The man is standing _______ his back _______ the fire. A. withto B. withagainst C. on for D. atof 87. I looked everywhere in the house ______ a key that had been lost. A. in searching for B. in search of C. to search D. searching of 88. I insisted that he_______ at once. A. leave B. left C. leaves D. leaving 89. When will you _______ me the money that was borrowed? A. pay B. repay C. pay for D. repay for | 
