To finish the work in such a short time, all of us like crazy day and night.
A. are supposed to work
B. suppose to work
C. suppose to working
D. are supposed to working
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(答案→)A. are supposed to work
B. suppose to work
C. suppose to working
D. are supposed to working
解析：考查短语be supposed to do sth 应该做某事。 句意：为了在这么短的时间完成工作我们都应该拼命地日夜干活。