Mr Black is a hardworking engineer. He often stays up late _____ night. [ ]A. at B. on C. about D. t

题目简介

Mr Black is a hardworking engineer. He often stays up late _____ night. [ ]A. at B. on C. about D. t

题目详情

Mr Black is a hardworking engineer. He often stays up late _____ night.
[     ]
A. at
B. on
C. about
D. to
题型:单选题难度:偏易来源:北京模拟题

答案

A

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