perfect

flight

Her acting is reallyperfect.

He sawed（锯） the board in half.

He completed（完成） theflight in 25 hours and 50 minutes.

gate

silly

business

I'll wait for you at thegate.

It was silly of me to say such a thing.

Mr. Jones is in the business of selling cars.

empty

stomach

burn

The streets were almost（几乎）empty.

He kicked（踢） Bill in thestomach.

The sun burns bright in the sky.

enough

everything

college

We have enoughchairs for everyone.

She does everything to help her mother.

What do you plan to do aftercollege?

simple

properly

see off

Such a toy is simpleto make.

That is not, properly speaking, a dictionary, but a grammar（语法书）.

He saw his friend off at the bus station.