题目内容
--- I’m sure Andrew will win the first prize in the final.
--- I think so. He _____ for it for months.
A. is preparing B. was preparing C. had been preparing D. has been preparing
D
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题目内容
--- I’m sure Andrew will win the first prize in the final.
--- I think so. He _____ for it for months.
A. is preparing B. was preparing C. had been preparing D. has been preparing
D