摘要：1748] The manager entered the office and was happy to learn that four-fifths of the tickets . [译文] 经理走进票房.很高兴地得知五分之四的票已经被预定了. A. was booked B. had been booked C. were booked D. have been booked [答案及简析] B. 时态题.预定的动作发生在知道之前.该用过去完成时态.

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