【題目】 It’s my turn _______ the blackboard today.

A. clean B. to clean C. cleaning D. cleaned

【答案】B

【解析】

試題分析：句意：今天輪到我擦黑板。It’s one’s turn to do sth輪到某人做某事，故用動(dòng)詞不定式to clean，故選B。

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