单项选择题

Never（）seen so many people cooperating in such an event.

A. is the world
B. has the world
C. the world is
D. the world has

<上一题目录下一题>

热门试题

单项选择题

A. He hit a tree.
B. He hit a truck.
C. He hit a box.
D. He hurt his head.

填空题

What kind of person is a color-blind person He can’t ______ all kinds of colors.