Ken prefers Chinese food________ French food.

If you have ever watched television, you have seen plenty .......... drug advertisements.

The streets are crowded (at/ in/ with/ of) vehicles at the rush hour.

Teachers are responsible (at/for/to/of) their teaching.

We were very doubtful .............. his ability.

She likes to go .......... a picnic.

Your father is very kind__________ David.

When we were in France, we spent a few days .............. Paris.

I'm very sorry ............. what I have done.

She smiled .......... him.

You should concentrate _________what the interviewer is saying and make a real effort to answer all the questions the interviewer asks.

Is the United States the wealthiest country ______ the world?

She likes reading books ....... the library.

Mr. Johnson said he was ......... favor of doing the work right away.

She saw a butterfly .......... the window.

We have to apply effective measures to save many plant and animal species ........ extinction.

Did Mr. Kennedy park his car .......... front .......... our house?

This variety of seed is inferior ______ the type I planted last year.

She is serious (with/about/of/for) learning to be a doctor.

She is famous _____________her beautiful face and sweet voice.

He is a man .......... his forties.