问题
选择题
Boys and girls, time is up, please check your name and ______ your papers.
A．hand out
B．hand up
C．hand in
D．hand down
答案
答案：C
题目分析：句意：同学们，时间到了。请写上你的名字上交你的试卷。hand in动词短语上交，结合句意，故选C.
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