A huge amount of oil was on the road, the effects of are not clear．A．itB．tha_刷题宝

题干

A huge amount of oil was on the road, the effects of are not clear．

A．it

B．that

C．which

D．whom

上一题下一题 0.64难度单项选择更新时间:2011-10-27 10:04:34

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