【題目】It is not right ________in public places.

A. smokesB. smokingC. to smoke

【答案】C

【解析】

句意：在公共場所吸煙是不對的。A. smokes 吸煙，第三人稱單數(shù)形式；B. smoking 動名詞形式；C. to smoke動詞不定式。本句中使用的句型是It is +形容詞+to do sth.，語境是：在公共場所吸煙是不對的。故選C。

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