27. The Grand Theatre in Shanghai is open to visitors during the daytime there is a perfo

发布时间：2020-08-16 06:26:37


27. The Grand Theatre in Shanghai is open to visitors during the daytime      there is a performance going on.
A. when
B. except for
C. except when
D. Except

网友回答

A. when
B. except for
(答案→)C. except when
D. Except
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