Jack’s sister has been a tour guide _______two years ago.A.forB.sinceC.aboutD.in

发布时间：2019-08-18 14:01:30

试题难度：一般 试题类型：单项选择题 试题内容：Jack’s sister has been a tour guide _______two years ago.

A.for
B.since
C.about
D.in
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