—He is fluent in English because he once stayed in London。 —Really ?How long there ?A. di

问题补充：

—He is fluent in English because he once stayed in London。

—Really ?How long there ?

A. did he live

B. has he lived

C. had he lived

D. does he live

答案：

(答案→)A. did he live

B. has he lived

C. had he lived

D. does he live

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