________ we know, Mr. Black is an expert on language teaching.A．AsB．ThatC．WhichD_刷题宝

题干

________ we know, Mr. Black is an expert on language teaching.

A．As

B．That

C．Which

D．What

上一题下一题 0.85难度单项选择更新时间:2010-07-09 12:06:49

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