We still cannot persuade him to give up smoking ____ hard we tried.A．soB．howC．th_刷题宝

题干

We still cannot persuade him to give up smoking ____ hard we tried.

A．so

B．how

C．though

D．however

上一题下一题 0.85难度单项选择更新时间:2011-11-02 09:48:07

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