单项选择题

The number of articles published on cancer ______ amazing.

A．is
B．are
C．have
D．have been
<上一题 目录 下一题>
热门 试题

单项选择题
______ that some guests were coming, they got the rooms ready.
A．Having told
B．Having been told
C．Telling
D．To tell
单项选择题
We ______ our breakfast when an old man came to the door.
A．just have had
B．just had
C．have just had
D．had just had
相关试题