If you don't know the meaning of the word, look it __ in the dictionary.

Are you acquainted _____ the lady?

She always takes good care_______ her children.

She intended to quit her job to stay ....... home and look  .......... her sick mother.

John missed a lot of lessons. He was ill _____ January to March.

Are you getting __________well at college?

Can you send it to me_______________ fax?

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

We areall aware____________ the importance of the environment protection.

China became the third country in the world to be able to independently carry __________ manned space flights.

A beautiful clock was given _________ her by a handsome boy.

Was your choice of research topic acceptable _____ your instructor.

Mary married a wealthy man. She got married .......... him last June.

She returned ____ China after spending much time abroad.

_______ the game last evening, my cousin hurt his ankle.

Ed depends ________ his family for financial support.

Our flat is ....... the second floor of the building.

She is accustomed __________ getting up early.

The accident was my fault, so I had to pay for the damage ........... the other car.

Toxic chemicals in the air and land have also driven many species ______ the verge of extinction.

They considered women to be better suited ________childbearing and homemaking.