How often ___ your teeth examined?

2023-05-26

A.are you having
B.do you have
C.have you get
D.you have

参考答案:B

本题考查动词时态。题目意为“你多久检查一次牙齿?”应用一般现在时,have sth done表示让别人给自己做某事,选项A为正在进行时,选项C为现在完成时,选项D不是疑问句,错误。故选B。

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