题目内容
() 3. — 一Has David finished his project yet?
I guess not. He on it at lunchtime. Do you want me to confirm it?
A. is working B. was working
C. has worked D. had worked
B
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题目内容
() 3. — 一Has David finished his project yet?
I guess not. He on it at lunchtime. Do you want me to confirm it?
A. is working B. was working
C. has worked D. had worked
B