问题
The streets are all wet.It ___ during the night.
A:must be raining
B:must have been rain
C:had to rain
D:must have rained
B:must have been rain
C:had to rain
D:must have rained
正确答案是：
同类题型
Going on a trip into ______ space must bequite ______ exciting experience
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Since you weren’t at the meeting, we the decision without you.[ ]
Planting trees is a good way to stop air pollution.— I think so. trees, air pollution.
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