多项选择题

This is a library. We ______ speak loudly here.

A.can
B.should
C.must not
D.need not

你可能感兴趣的试题

问答题
蔬菜嫁接时常用的方法有（）等
答案：靠接,插接,劈接
多项选择题
Everyone ______ do his best for his motherland.
A.can
B.may
C.must
D.dare