They are _____ in Shenzhen now, I think they must enjoy themselves.[ ]A. on holidayB. on dutyC. on businessD. on watch-初中英语-n多题

◎ 题干

They are _____ in Shenzhen now, I think they must enjoy themselves.

[ ]

A. on holiday
B. on duty
C. on business
D. on watch

◎ 答案

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◎ 解析

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◎ 知识点

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