单项选择题

The number of cell phones（）increased dramatically in the past few years.

A．have
B．are
C．has
D．is

<上一题 目录 下一题>
热门 试题

单项选择题
Linton looked as though he（）ill for a long time.

A．were
B．was
C．has been
D．had been
单项选择题
To the list may（）some other names.

A．be added
B．added be
C．add
D．add be
相关试题