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4. 选B,用现在完成时表示结果,即你已经错过了机会,其结果是:你只能等。

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3. 选D。用现在完成进行时表示持续到现在的一段时间。

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2. 选C。句意为“好在我们(刚才)没有去公园,因为天(现在)已经开始下雨了”。

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1. 选D。根据那个小男孩徘徊的现象,推知他可能是找不到妈妈了。用现在完成时表示结果。

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31. The books, ________ the dictionaries, must be put back where they ________.

A. included; were                    B. to include; are

C. including; were                   D. including; are

[答案与解析]

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30. “Where is Mother.” “She is in the kitchen. She _______ the housework all morning.”

A. is doing                         B. was doing

C. has done                        D. has been doing

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29. “Was Andrew there when you arrived?” “Yes, but he ______ home soon afterwards.”

A. had gone                        B. has gone

C. is going                         D. went

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28. Please call again. Jim _______ a bath just now.

A. has had                         B. was having

C. is having                        D. has

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27. “Mike is not coming to the football game this afternoon.” “It’s a shame! He _______!”

A. promises                        B. promised

C. will promise                      D. had promised

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26. “John took a photograph of you just now.” “Oh, really? I ______.”

A. didn’t know                      B. wasn’t knowing

C. don’t know                      D. haven’t known

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