单项选择题

Pens ______ by people for writing.

A．use
B．using
C．are used
<上一题 目录 下一题>
热门 试题

单项选择题
The children didn't stop playing games ______ it was time for supper.
A．until
B．if
C．since
单项选择题
--Have you got a new desk --No, I ______.
A．don't
B．haven't
C．doesn't
相关试题