493. I know ______type of machine is needed but I have no idea which type.

A. certain　　 B. two　　 C. some　 D. an

492. We have a long summer season _______six months.

A. which last　　 B. lasting　　 C. lasts for　 D. that last for

491. Jasper is one of his three sons who ____in the army; the other two ______in the navy.

A. is; are　　 B. are; are　　 C. is; is　　 D. are; is

490. On the platform he ______ his trouble to a man who was there waiting for train.

A. explained　　　　　 　　B. talked

C. made an explanation　　　 d. explained for

489. The police arrived _____ two minutes after he dialed 911.

A. at the scenery　　　　　　　 B. the scene

C. on the place　　　　　　　　 D. on the scene

488. The two countries were _______ between 1989 and 1991.

A. peace　　 B. at no war　　 C. at peace　　 D. at peaceful

487. The house is so old that it calls ________ .

A. to repair　　　　　　 B. for repairing

C. for being repaired　　 D. repairing

486. They say the repair work _____ the office building will start on Monday.

A. on　　 B. at　　 C. over　　 D. for

485. The work is well done with all the electric wires __________.

A. fixed up　　 B. fixing　 C. fixing up　　 D. to be fixed

ABCDA　 ABCDA　 BBCDB　 ACBCA

484. Those villagers looked ________ at the house washed away by the flood.

A. sad　　 B. sorrow　　 C. sadly　　 D. with sad