We must keep our classroom______.

A. cleaning         B. clean            C. to clean

 

【答案】

B

【解析】試題分析：本句中keep是系動(dòng)詞，后面接形容詞作表語(yǔ)，故選B，干凈的。

考點(diǎn)：keep用法

點(diǎn)評(píng)：keep sth adj保持某物怎么樣，固定短語(yǔ)的考查也是英語(yǔ)考查的一個(gè)重點(diǎn)，熟記這些短語(yǔ)結(jié)構(gòu)可以減少答題中的分析判斷時(shí)間，所以平時(shí)加強(qiáng)短語(yǔ)記憶也是學(xué)好英語(yǔ)的關(guān)鍵環(huán)節(jié)。

 

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