题目内容
Robert is away. He _______ America since last week.
A. has been to B. has joined a club in
C. has studied in D. has become a manager in
C
【解析】
试题分析:句意:罗伯特不在。自上周以来他就在美国学习。根据since last week可知该用现在完成时,而且谓语动词必须是延续性动词,所以选C。
考点:考查动词。
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