22. At the bus stop ___ a soldier and two young people on their way to North Carolina.

　 A. were　 B. was　 C. is　 D. sits and waits

21. “Which bus should I take to go to the museum?”

　 “Either of these buses ___ to the museum.”

A. will go　 B. going　 C. go　 D. goes

20. The subject of these lectures ___ by the lecture committee.

　 A. announces　 B. have been announced　 C. announced　 D. has been announced

19. Economics ___ the science of choice.

　 A. are　 B. which is　 C. is　 D. are used as

18. There ___ the last piece of cake and the spoonful of ice cream.

　 A. we go　 B. goes　 C. go　 D. are going

17. Here ___ notebook and report that I promised you last week.

　 A. is the　 B. are the　 C. was the　 D. has been a

16. The bread and the butter ___ in their shop.

　 A. has been sold out　 B. have been sold out　 C. was sold out　 D. were sold out

15. More than one student ___ for the class this morning. The teacher was very angry.

　 A. was late　 B. were late　 C. has been late　 D. had been late

14. John or his parents ___ going to visit the Wang’s next Sunday.

　 A. is　 B. are　 C. was　 D. were

13. Each man and each woman ___ to help in the work.

　 A. is asked　 B. are asked　 C. ask　 D. had asked