Alison has been sleeping ______ eight o'clock yesterday evening.[ ]A. forB. sinceC. atD. until-

题目简介

Alison has been sleeping ______ eight o'clock yesterday evening.[ ]A. forB. sinceC. atD. until-

题目详情

Alison has been sleeping ______ eight o'clock yesterday evening.
[     ]
A. for
B. since
C. at
D. until
题型:单选题难度:中档来源:同步题

答案

B

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