15．The careless driver is _______ for the traffic accident_______ yesterday．

A．to blame; happened　　　　 B．to blame; happening　　

C．to be blamed; happened　　 D．to be blamed; happening

14. _______ the interview in Boston lasted so long, I missed my connecting flight to New York.

　 A. Due to　　　　 B. So long as　　　　 C. As　　　　 D. Despite

13. At the last place Gary worked, they ______ an annual company picnic. All the employees _____ bring their families along and spend the day at a nearby park. It was great.

　 A. had to have; had to　　　　　　　　 B. used to have; couldn’t

　 C. would have; didn’t have to　　　　　 D. used to have; would

12. Well, really _____ now is start learning what to do with this software and read a lot of references, learn and practice _______ you can.

　 A. that you need do; whatever　　　　　 B as should you do; the longer hours

　 C. how you should start; the most　　　　 D. what you should do; as much as

11. --- Did you make sense of what the man said just now?

--- No, his meaning didn’t ________. Would you explain it to me?

A. get through　 B. get off　 C. get across　 D. get out

10. ---Do remember to charge the battery for 12 hours when you first use it.

--- ________.

A. Thank you, I remember.　　 B. What for　 C. Up to you　 D. Got it

9. The cause he had devoted himself ________ a perfect success.

A. to proved　 B. proved　 C. to prove　 D. to proving

8. If ________ in wet sand, vegetables can remain fresh for a long time.

A. being buried　 B. having buried　 C. buried　 D. burying

7. So difficult _______ it to acquire a large vocabulary without the help of a teacher that he was close to giving up.

A. he have left　 B. have he felt　 C. he did felt　 D. did he feel

6. It is great fun to visit Disneyland. Just _________ playing with those cartoon characters you watch on TV.

A. to imagine　 B. imaging　 C. have imaged　 D. imagine