问题描述：
12 It's required that the students ____mobiles phones in thire school,so seldom____them using one
A should not use; you will see
B mustn’t use ;will you see
C not use’; you will see
D not use,will you see
选哪个
A should not use; you will see
B mustn’t use ;will you see
C not use’; you will see
D not use,will you see
选哪个
问题解答：
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