We must keep the classroom .A. cleanB. to cleanC. cleaningD. cleaned

发布时间：2020-08-20 15:53:22

We must keep the classroom     .
A. clean
B. to clean
C. cleaning
D. cleaned

网友回答

(答案→)A. clean
B. to clean
C. cleaning
D. cleaned
解析：本题的含义是我们必须要使教室保持干净，keep sth+形容词表示使某物保持某个状态，clean可以为形容词，故本题选A。
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