15. Most of the staff is away today so you’ll have to use whoever is （　　　）.

　　A. convenient B. available

　　C. approachable D. applicable

　　16. When she is nervous,she does nothing but （　　　）.

　　A. eating B. eat

　　C. has eaten D. ate

　　17. The doctor said that the patient had （　　　） at once.

　　A. to operate B. to be operated

　　C. to operate on D. to be operated on

　　18. To answer correctly is more important than （　　　）.

　　A. answered quickly B. a quick answer

　　C. quickly answered D. to answer quickly

　　19. Suddenly it （　　　） to me that I’ll have to water the plants in the garden tomorrow.

　　A. occurred B. occurs

　　C. was occurred D. is occurred

　　20. I have done everything （　　　） I can do for you.

　　A. that B. which

　　C. what D. whatever

　　21. Hardly （　　　） when there was a power cut.

　　A. has the film started B. had the film started

　　C. the film started D. started the film

　　22. Kurt did so well in his speech today that he （　　　） it many times in the past week.

　　A. should have practiced B. must have practiced

　　C. would have practiced D. could have practiced

　　23. I can’t understand （　　　） a decision until it is too late.

　　A. him to postpone to make B. his postponing to make

　　C. his to postpone making D. his postponing making

　　24. It was the training that he had as a young man （　　　） made him such a good engineer.

　　A. that B. what

　　C. has D. who

　　25. （　　　）,a car knocked her down.

　　A. Walking home B. As she walked home

　　C. While walking home D. Having walked home

　　26. （　　　） his speech, the audience was invited to ask questions.

　　A. Finishing B. As soon as he finished

　　C. On finishing D. Having finished

　　27. He said he wrote the song by himself,（　　　） was not true.

　　A. which B. that

　　C. it D. what

　　28. Important （　　　） his discovery was,it was regarded as a matter of no account in his time.

　　A. to B. for

　　C. as D. although

　　29. Don’t forget to post the letter for me,（　　　）?

　　A. do you B. will you

　　C. are you D. can you

　　30. It was recommended that they （　　　） for the doctor.

　　A. has waited B. waited

　　C. wait D. should have waited