She’s never satisfied ____________ what she has got.

We’ll buy a smaller house whenthe children have grown____________ and left home.

Your friend is always complaining__________ her job.

I saw Tom ............ a concert last Saturday.

We are grateful (at/in/on/to) our teacher.

Last night I was invited ___ a formal get-together and I enjoyed myself a great deal.

He didn't dare to say it .......... my face.

Aren't you glad that you went to the party with us .......... all?

Let's drink .......... his success.

Are you getting __________well at college?

Iraq is rich (on/at/to/in) oil.

Family members who live apart try to get together ...... Tet.

It was not a problem. We looked____________ his number in the telephone book.

He had learned the whole poem _____ heart.

.......... mistake, I took the wrong book from my desk this morning.

Why were you absent ____________ class this morning?

Mr. Green is responsible ___________ hiring employees.

There must be _______ least one vowel in every English word.

Many vegetables, including tomatoes, and corn, are native ______ the New World.

If you earn a good salary, you can be independent .......... your parents.

They cancelled the flight because _________________ the storm.