It’s required that the students mobile phones in their school so seldom them using one.

问题补充：

It’s required that the students mobile phones in their school, so seldom them using one.

A. not use; will you see

B. should not use; you will see

C. don’t use; will you see

D. would not use; you will see

答案：

(答案→)A. not use; will you see

B. should not use; you will see

C. don’t use; will you see

D. would not use; you will see

解析：第一个空考查It’s required that (should)do，第二个空考查seldom放在句首使用部分倒装。所以选A。