488. The fire was very big, ____ , the firefighters put it out in half an hour.

A. but　　 B. while　　 C. however　　 D. yet

487. She lives ___ all her life.

A. alone　　　 B. closing　　　 　C. close　　　 D. closed

486. I went to bed early that night, ___ I couldn’t ___ for long.

A. and, go to sleep　 B.but, go to sleep　 C. so, fall sleep　　 D. or, go to bed

485. You’d better do it ____ I did.

A. when　　 B. as　　　 C. like　　　 D. because

484. So much work usually makes them ____ very tired.

A. to feel　　 B. feels　　 C. feeling　　 D. feel

483. The children planted more trees and flowers after they ____ Greener China.

A. joined　　 B. took part in　　 C. became　 D. were

482. I bought a new dictionary and it ____ me 30 yuan.

A. paid　　 B. spent　 C. took　　 D. cost]

481. If you want to learn English well, you must use it as ____ as possible.

A. often　　 B. long　　 C. hard　 D. soon

480. Yesterday I saw ___ enjoy ___ in the park.

A. her, hers　 B. they, them　 C. she, herself　 D. them, themselves

479. You’ve never seen such a wonderful film, ____?

A. don’t you　　 B. haven’t you　　 C. do you　　 D. have you