Question

 —Excuse me, sir, smoking _________ in the gas station.

— Oh, I'm really sorry.

A. doesn't allow            B. isn't allowed       C. aren't allowed

Answer 1

【答案】B

【解析】选B。考查被动语态和非谓语动词的用法。Smoking作为非谓语动词作主语应看做第三人称单数来处理；又该句的句意为“对不起，先生，加油站不允许吸烟”，故句子应该用被动语态。所以C项为正确答案。