题目内容

(2011·河南实验中学第一次月考)Robert is said ___________ abroad, but I don’t know what country he studied in.

A . to have studied     B. to be studying

C. to study        D. to have been studying

A考查不定式的时态。根据I don’t know what country he studied in可知用不定式的完成时。

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