John seems puzzled about ________ the question meant.A．howB．whyC．whatD．which_刷题宝

题干

John seems puzzled about ________ the question meant.

A．how

B．why

C．what

D．which

上一题下一题 0.4难度单项选择更新时间:2015-01-15 06:50:52

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