Question

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

Answer 1

选 B mustn’t use ;will you see
句首为否定或半否定的词语，如no, not, never, seldom, little, hardly, at no time, in no way, not until… 等。

Answer 2

D 第一个空格受required影响，必须要用虚拟语气should do sth或should not do sth，should可以省略。第二个空格需要倒装，因为是seldom含有否定含义，置于句首要部分倒装。

Answer 3

It's required that the students mustn’t use mobiles phones in thire school, so seldom will you see them using one 觉得选B