____afterheenteredtheunibersityhisenglishhasbeenmuchimproveaafterbbeforecwhendsincewhichone
2022-05-02 32次 反馈错误 加入收藏 正确率 : 100%
题目内容：
____after he entered the unibersity his english has been much improve
a after
b before
c when
d since
which one
优质解答
选D.since与现在完成时连用.
还有应该是improved .
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