He English for ten years by the time he takes the examination. A. will have been studying

发布时间：2020-08-16 07:50:20

He      English for ten years by the time he takes the examination.
A. will have been studying
B. would have been studying
C. will study
D. studied

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(答案→)A. will have been studying
B. would have been studying
C. will study
D. studied
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