Our classroom ___________ every day.A、should cleanB、cleansC、should be cleaned

游客2025-07-10 21

问题 Our classroom ___________ every day.

选项 A、should clean
B、cleans
C、should be cleaned

答案 C

解析该句是含有情态动词的被动语态。其结构是情态动词+be+过去分词。

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