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1. They haven’t arrived yet but we________them at any moment. A. are expectedB. have expected C. are expecting D. will expect 解析 用现在进行时表示目前的一种状态。 答案 C 2. I think you must be mistaken about seeing him at the theatre; I’m sure he________abroad all week. A. is B. was C. has been D. had been 解析 用现在完成时表示影响或结果，即他整个星期都在国外，所以你说你在剧院见过他，你一定是搞错了。 答案 C 3. The students________busily when Miss Brown went to get a book she________in the office. A. had written, left B. were writing, has left C. had written, had left D. were writing, had left 解析 “把书忘在办公室”发生在“去取书”这一过去的动作之前，因此“忘了书”这一动作发生在过去的过去，用过去完成时。句中when表示的是时间的一点，表示在“同学们正忙于……”这一背景下，when所引导的动作发生。因此前一句应用过去进行时。 答案 D 4. I tried to phone her, but even as I________she was leaving the building. | 
