题目内容
Robert is said ________ abroad, but I don’t know what country he studied in.
[ ]
A.to have studied
B.to study
C.to be studying
D.to have been studying
答案:A
提示:
提示:
|
根据后半句“但是我不知他在哪个国家学习过”可知在国外学习是一个已经完成的动作,因而应用不定式的完成时。 |
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