around the lab, we were taken to see the library.A．Being shownB．ShowingC．Ha_刷题宝

题干

around the lab, we were taken to see the library.

A．Being shown

B．Showing

C．Having been shown

D．To show

上一题下一题 0.4难度单项选择更新时间:2012-05-31 03:20:37

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