您現(xiàn)在的位置：21. _________black clouds covering the sky，he stopped his work and went home.
A. To see B. Having been seeing
C. Seeing D. having to see
答案：（C）
現(xiàn)在分詞作狀語從句，主動態(tài)；
22. I advised _________，but he turned me a deaf ear.
A. him not to smoke again B. him to smoke not again
C. him to not smoke again D. not him to smoke again
答案：（A）
不定式的否定式詞序：not to do
23. _________，he works very late at night.
A. Having bee choosing director B. Choosing director
C. Having chosen director D. Being chosen director
答案：（D）
現(xiàn)在分詞作狀語從句，被動態(tài)；
24. She prefers_________ taking an examination.
A. writing a term paper than B. being written for a term paper
C. to write that a term paper D. writing a term paper to
prefer doing…to doing…
25. The clerk is going to take bus money.
A. by saving B. to save C. for to save D. saving
答案：（B）
不定式作目的狀語；
26. The brakes need _________.
A. adjusting B. adjusted C. to adjustment D. to adjust
答案：（A）
need sb. to do…需要某人做… need doing…需要被做 need sth.done 需要請人做；
27. Henry and Bady_________ to the parties at the Trade Union every Saturday.
A. are used to go B. use to go C. would stay D. shall stay
答案：（C）
be used to do…被用于做 be used to doing… 習(xí)慣于；used to do…過去常常（現(xiàn)在不了）；
28. Her government insisted _________she until she finished her degree.
A. stayed B. stay C. would stay D. shall stay
答案：（B）
虛擬語氣在賓語從句中，是should 動詞原形或只用動詞原形；這類謂語動詞有：insist，suggest，order，demand，command，propose，arrange，request，require，desire，recommend 等；
29. Excuse me，but it is necessary that_________ your temperature .
A. be taken B. taking C. to take D. was taken
答案：（A）
虛擬語氣在主語從句中，是should 動詞原形、should have done .或只用動詞原形；這類詞有：
It is（was） necessary （important，desirable，imperative，advisable，desired，suggested，proposed，settled，requested，decided） that…
30.Hix Chemistry teacher recommends that he_________ A regular degree program.
A. will begin B. begins C. begin D. is beginning
答案：（C）
見第28題；
