503. Of the two problems the first one is _____ .

A. the most important　　　　 B. more important

C. the less important　　　　　 D. less important

502. Jack as well as his classmates _______the importance of the matter.

A.. realize　　 B. realizes　　 C. have realized　　 D. are realizing

501. This is a long hard winter, with everything _______, white.

A. covered　　　　 B. covered by　　 C. covering　 D. covered with

500. He rushed out of the house, __________the door open.

A. leaving　 B. left　　 C. having left　　 D. and leaving

ABCDA　 ABCDA　 ABCDA　　

499. __________, the woman drove off.

A. Filled with gas　　　　　　　　 B. Being filled with gas

C. Filling the car with gas　　　　　 D. Having filled the car

498. A bomb sent the ship _______ to the bottom of the sea.

A. to sink　　 B. sunk　 C. sinking　　 D. being sunk

497. Nowhere else _________ find such a beautiful scenery.

A. you can　　 B. can you　 C. we can　　　 D. we are able to

496. Hardly ______-out when it began raining.

A. had he stepped　　　　　 B. did he step

C. he had stepped　　　　　 D. stepped he

495. – Is Mary still at work?

　 --- Yes, but she said she ______ a holiday next Saturday. She’ll pay a visit to Italy .

A. will go on　 B. went on　 C. took　　 D. went on for

494. The board that he _________ there two days before _____there.

A. laid; laid　　　　　　　　 B. had laid; lie

C. lay; lay　　　　　　　　 D. had laid; lay