In those days John with his classmates kept busy preparing for the exam.A. isB. areC. wa

发布时间：2020-08-16 11:52:39


In those days John with his classmates        kept busy preparing for the exam.
A. is
B. are
C. was
D. were

网友回答

A. is
B. are
(答案→)C. was
D. were
解析：本题中在那些天表示的是过去，用过去时，本题的主语中心词是John，为单数第三人称，故用was，故本题选C。
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