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问题: 初一选择题

His brother has been to Stone Forest twice _____
he came to Yunnan.

A.after B.before C.since D.for

解答:

答案是C.
自从他去了云南,他的哥哥(弟弟)已经去了Stone Forest 两次了.
since 译为自从.与现在完成时连用.
 
希望能及时采纳!