______ has already been pointed out, grammar is not a set of dead rules.A．AsB．It_刷题宝

题干

______ has already been pointed out, grammar is not a set of dead rules.

A．As

B．It

C．That

D．Which

上一题下一题 0.4难度单项选择更新时间:2012-05-12 09:40:19

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