摘要：---Has Peter handed in his paper yet? ---I’m not sure. He on it last week. A. was working B. has worked C. worked D. had worked
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- --Has Peter handed in his paper yet?
---I’m not sure. He _______ on it last week.
A. was working B. has worked C. worked D. had worked
查看习题详情和答案>>--Has Peter handed in his paper yet?
---I’m not sure. He _______ on it last week.
A. was working B. has worked C. worked D. had worked
查看习题详情和答案>>--Has Peter handed in his paper yet?
---I’m not sure. He _______ on it last week.
A. was working B. has worked C. worked D. had worked
查看习题详情和答案>>--Has Peter handed in his paper yet?
---I’m not sure. He _______ on it last week.
| A．was working | B．has worked | C．worked | D．had worked |