His friends go to Beidaihe by train vacation every year.A. atB. ofC. onD. in

发布时间：2020-08-22 03:10:15

His friends go to Beidaihe by train     vacation every year.
A. at
B. of
C. on
D. in

网友回答

A. at
B. of
(答案→)C. on
D. in
解析：go to sp on vacation 表示去某地度假的意思，故选答案为C
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