We on the project for three hours. Let’s have a rest. A. are working B. have been working ——青夏教育精英家教网—

摘要： We on the project for three hours. Let’s have a rest. A. are working B. have been working C. worked D. had worked

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31. We______ on the project for three hours. Let’s have a rest.

A. are working B. have been working C. worked D. had worked

We______ on the project for three hours. Let’s have a rest.

A. are working B. have been working C. worked D. had worked

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