题目内容

【题目】You're supposed to keep the classroom .

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

【答案】A

【解析】句意:你应该保持教室干净。Keep在这里是系动词,keep+宾语+宾补,keep+sth +形容词,保持---处于---状态,clean形容词,干净的;故选A

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