He took medicine 3 times a day,________ didn't work.A．itB．butC．whichD．but which_刷题宝

题干

He took medicine 3 times a day,________ didn't work.

A．it

B．but

C．which

D．but which

上一题下一题 0.64难度单项选择更新时间:2017-02-07 04:31:44

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