―I'm so sorry I can't be in your birthday party tonight. ―It doesn't matter. But I do hope you will come.A. can B. couldC. have to D. be able to 题目和参考答案——青夏教育精英家教网—

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( ) 4. ―I'm so sorry I can't be in your birthday party tonight.

―It doesn't matter. But I do hope you will come.

A. can B. could

C. have to D. be able to

4. D can和could通常只用于一般现在时;而be able to可用于各种时态。

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