To improve its athletes' ____, Viet Nam has regularly exchanged delegation of sport officials, coaches, referees and athletes with other countries.

A. tsunami         

B. flood              

C. famine             

D. catastrophe

A. More and more Vietnamese youngsters are studying English, but they recognize the importance of the language.

B. As more and more Vietnamese youngsters are studying English, they recognize the importance of the language.

C. Recognizing the importance of English, more and more Vietnamese youngsters are studying the language.

D. More and more Vietnamese youngsters are studying English, or they recognize the importance of the language.

A. takes after

B. takes care of

C. looks up

D. looks after

A. Me, too.

B. Very kind of your part.

C. It’s a pleasure.

D. Yes, I’d love to.

A. whole                             

B. world                   

C. earth           

D. entirety

A. There are a lot of words in the dictionary for you to look at.

B. You should buy this dictionary to find the word you need.

C. You can find the meaning of this word in the dictionary.

D. The dictionary contains a lot of words except the one you need.

A. left no aftershocks

B. destroyed everything except communication networks

C. caused no human loss

D. had effects on more than 45 million people