_____ is known to us all, a skill can only be acquired through hard work.A．ItB．A_刷题宝

题干

_____ is known to us all, a skill can only be acquired through hard work.

A．It

B．As

C．What

D．That

上一题下一题 0.64难度单项选择更新时间:2013-06-27 03:52:52

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