I ask my father to give up smoking. It’s bad for his lungs.A. must B. needC. shouldn’t

问题补充：

I ask my father to give up smoking. It’s bad for his lungs.

A. must B. needC. shouldn’t

答案：

解析：must必须，一定；need 需要；shouldn’t不应该。句意：我必须要求我的父亲戒烟。吸烟对他的肺不好。结合语境可知选A。

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