The United States has a ............. of around 250 million.

Why are you always so ______ ? You never smile or look cheerful.

 The us eof plastics for shoes _____ of leather has ruined shoe repairing as a business.

Steve is a good ________ man, completely devoted to his wife and kids.

The room was so quiet that she could hear the _____ of her heart.

 The old lady couldn’t ____ because she had rheumatism.

 Her skirt had been so ______ in packing that she had to iron it before going out.

Mathematics and Literature are..............subject in high schools.

A long line of traffic had to wait at the _____ until the train had passed.

It was a difficult tune, but we never gave up hope. (Tìm từ đồng nghĩa)

It is not easy to ________ our beauty when we get older and older.

Shut the window and _____ the cold _______.

It is parents' duty and responsibility to _______ hands to take care of their children and give them a happy home.

Hugh is quite worried because he hasn’t ________for the end-of-term test.

He knows so much about the stars that I am sure it would be impossible to find his ______.

The damage done to my house by the fire has now _______. 

This year the farmers were just able to gather the _____ before the fine weather came to an end.

It's cool in the _________.

The peoples of the African interior began to ______ gold in exchange for the goods they needed from abroad.

When the bill came, he had to _____ money from his brother to pay it.

The castle was surrounded by a _______, which nowadays contained only occasional rainwater.