问题
选择题
April 1st is a special day, ________ practical jokes may be played without punishment.[ ]
A. in which
B. on which
C. with which
D. for which
答案
答案：B
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April 1st is a special day, ________ practical jokes may be played without punishment.[ ]
A. in which
B. on which
C. with which
D. for which
答案：B