Our teacher is always busy preparing lessons until 11 o’clock at night, we students have gone to sle

题目简介

Our teacher is always busy preparing lessons until 11 o’clock at night, we students have gone to sle

题目详情

Our teacher is always busy preparing lessons
until 11 o’clock at night,        we students have gone to sleep.
A.that timeB.by which time
C.by that timeD.which time
题型:单选题难度:偏易来源:不详

答案

B
句意为“我们的老师总是忙着备课到晚上11点钟,那时我们已经睡了”。by意为“到……时(为止)”,which time 指代 “11 o’clock at night’。

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