--Pleasebequietinthelibrary!Lookatthesign.Itsays,“No   ...

问题详情：

--Please be quiet in the library! Look at the sign. It says, “No        .”

        --I am sorry.

        A．talk           B．talking           C．read        D．reading

【回答】

B

知识点：祈使句

题型：选择题