Everyone must their notebooks on the desk while taking an English exam.
A. put away
B. put down
C. put off
D. put up
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(答案→)A. put away
B. put down
C. put off
D. put up
解析：A. put away收好，储存，B. put down记下，放下，C. put off推迟，D. put up张贴，竖立，句意：在英语考试的时候，每个人必须将桌上的笔记本收起来。所以选A。