题目内容
I first met Mr. Smith in America. He ______ at Stanford University then.
A. studied B. has studied
C. is studying D. was studying
D
解析:
由关键词:then推出过去进行时。
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题目内容
I first met Mr. Smith in America. He ______ at Stanford University then.
A. studied B. has studied
C. is studying D. was studying
D
由关键词:then推出过去进行时。