问题

The study was carried out in one small town so we can’t be sure that the results are truly ________.

A:exact
B:proper
C:representative
D:natural

正确答案是：

同类题型

Not only the students but also the teacher ___enjoying the film at 9 pm yesterday.

There is a bridge _____the river. —Be careful when you ______it.

If I______ you, I_______ go thereat once.

In which of the following places can you often see this sign

_______ — I have a cold and I don’t want to eat anything.