590. When Jack arrived he learned Mary ___for almost an hour.

　　 A. had gone　 B. had set off　 C. had left　 D. had been away　　　　

589. ----Do you know our town at all?

　　　 ----No, this is the first time I ______ here.

　　 A. was　 B. have been　　 C. came　　 D. am coming　　　　　

588. We were all surprised when he made it clear that he ____office soon.

　　 A. leaves　　　 B. would leave　 C. left　　 D. had left　　　　　　

587. My dictionary ____. I have looked for it everywhere but still______.

A.　　 has lost; don’t find 　　B. is missing; don't find

C. has lost; haven’t found　 D. is missing; haven’t found

586. ---How long ____each other before they ____married?

　　　 --For about a year.

A. have they known;　 get　　　　　 B. did they know; were going to get

C. do they know;　 are going to get　 D. had they known; got　　　　　

585. In some parts of the world, tea ____with milk and sugar.

A. is serving　　 B. is served　　 C. serves　　 D. served　　　　

583.---Don’t forget to come to my birthday party tomorrow.

　　　 ---______.

　　 A. I don’t　　 B. I won’t　　 C. I can’t　 D. I haven’t　　　

[　 ]584 I need one more stamp before my collection _______.

A. has completed　 B. completes 　C. has been completed　 D. is completed　

582. I don’t really work here; I ____until the new secretary arrives.

　 A. just help out　 B. have just helped out　 C. am just helping　 D. will just help out

581. ---Do you like the material?

　　　 ---Yes, It _____very soft.

　 A. is feeling　　 B. felt　 C. feels　 D. is felt　　　　　　　　　

580. ---I’m sorry to have you waiting.

　　　 ----Oh, not at all. I ______here only a few minutes.

　 A. have been　　 B. had been　　 C. was　 D. will be