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1.howsoon和howlong的区别。2.inthefrontof和infrontof的区别。3.Whattoheryesterdayevening?为什么要填"happened"而不是"washappened"?4.Wehaven'tgotoverallthedifficultiesyet.

题目详情
1.how soon和how long的区别。
2.in the front of 和in front of的区别。
3.What ______to her yesterday evening?为什么要填"happened"而不是"was happened"?
4.We haven't got over all the difficulties yet.
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答案和解析
什么意思啊?