—Mr. Li, let’s go fishing this weekend with Lao Wang, shall we?—I’d love to, but nobody k

发布时间：2020-08-21 08:34:21

—Mr. Li, let’s go fishing this weekend with Lao Wang, shall we?
—I’d love to, but nobody knows if he      free then.
A. will
B. is
C. will be
D. has been

网友回答

A. will
B. is
(答案→)C. will be
D. has been
解析：在if 引导的宾语从句中，从句的时态，要根据本来的时态决定，故选C
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