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Since the road is wet this morning,_____last night.

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Since the road is wet this morning,_____last night.
A.it must rain B it must have have rianed Cit must be rianed
As the physics is hard enough,i ____study it.
A can't B cannot C amnot able to
question1:can't和cannot有什么区别
1.B不过应该是it must have rianed (现在完成时,表过去发生的事情(昨晚下雨了)对现在造成的影响(地上是湿的))
2.C(物理题太难了,做不出来(即能力不够))
很简单一个记法,表肯定意思就是must,表否定意思就是can't(not be able
to)
can't和cannot没有区别,缩写而已