引领人在行使引领权时应注意，1 名引领人最多引领

Pine trees are usually believed to _______ cold weather.

Free medical service is _______ to nearly all the college students in China.

After working for twenty hours without any rest, the doctors were _______.

The college students in China are _______ from smoking on campus because this will do them no good.

Professor Smith is also the _______ of the international program office. If you have any problem when you study here, you may go to him for help.

We won’t allow any foreign country to _______ in our internal affairs.

We can not _______ all the magazines together.

What he said in the meeting _______ everybody present.

Some lazy men would rather _______ than work.

This boy was _______ for what he had done in the class.