A、Two years ago. B、Since two years ago. C、The year before. B回答表示一段时间的问句,要用表示一段时间的短语,这里选项[B]Since two years ago. 符合语法规则。

admin2009-06-21  41

问题  
Have you ever studied with a group?
How long have you been working here?

选项 A、Two years ago.
B、Since two years ago.
C、The year before.

答案B

解析 回答表示一段时间的问句,要用表示一段时间的短语,这里选项[B]Since two years ago. 符合语法规则。
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