题目内容
Sally has been swimming ______ four hours
- A.for about
- B.since
- C.about
- D./
A
本题的含义是她游泳已经游了四个小时,表示做事时间长度,用于完成时,通常用介词for连接时间长度,故选A
本题的含义是她游泳已经游了四个小时,表示做事时间长度,用于完成时,通常用介词for连接时间长度,故选A
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