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

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

 He _____ English for ten years by the time he takes theexamination.

A. will have beenstudying                 B. would have been studying

C. willstudy                            D. studied      

 

试题答案

【答案】

 A