He is over fifty, but he looks as if he ____________ only in his thirties.
选择一项：
A. will be
B. is
C. has been
D. were

A.
选择一项：

【参考答案】

选B
原文大意是，他已经50多岁了，但他看起来好像才30来岁。
这里是他现在看起来的状态是一般现在时，所......

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