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答案:A
请教!谢谢!
[attachimg]47371[/attachimg]
since后面不能跟动名词.后面的从句应该是一般过去时.
less than 35 years应该是整句的状语吧,
那如果把句子理顺,是不是:their descendents had migrated... less than 35 years.
??
怎么看都别扭...为什么less than 35 years前面连个介词都没有?
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