We on this project for four hours. Let’s have a rest.A. are workingB. have been workingC

发布时间：2020-08-16 19:56:16

We      on this project for four hours. Let’s have a rest.
A. are working
B. have been working
C. worked
D. had worked

网友回答

A. are working
(答案→)B. have been working
C. worked
D. had worked
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