Was it midnight ________ the fire broke out?A．whenB．thatC．whichD．at which_刷题宝

题干

Was it midnight ________ the fire broke out?

A．when

B．that

C．which

D．at which

上一题下一题 0.64难度单项选择更新时间:2010-10-09 04:57:41

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