_________ happened to be no one in the building when the fire broke out.A．ItB．Th_刷题宝

题干

_________ happened to be no one in the building when the fire broke out.

A．It	B．There
C．This	D．That

上一题下一题 0.85难度单项选择更新时间:2010-12-14 04:28:04

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