31.　　 Oil prices have risen by 32 percent since the start of the year, ______ a record US $57.65 a barrel on April 4.

A. have reached　　　 B. reaching　　 C. to reach　　 D. to be reaching

30.　　 ____________ in the mountain for a week, the two students were finally saved by the local police.

A. Having lost　　　 B. Lost　　　 C. Being lost　　　 D.　 Losing

29.　　 ---Is Bob still performing?

---I’m afraid not. He is said _______the stage already as he has become an official.

A. to have left　　 B. to leave　 C. to have been left　　 D. to be left

28.　　 I really can’t understand _______ her like that.

A. you treat　　　 B. you to treat　　 C. why treat　　 D. you treating

27.　　 __________move about university courses, call 746-3789.

A. To find out　　 B. Finding out　　　　 C. Find out　　　 D. Having found out

26.　　 The manager, _____ it clear to us that he didn’t agree with us, left the meeting room.

A. who has made　　 　B. having made　　　 C. made　　　 D. making

25.　　 　_________from other continents for millions of years, Australia has many plants and animals not found in any other country in the world.

A. Being separated　 B. Having separated　 　C. Having been separated　 D. To be separated

24.　　 The repairs cost a lot, but its money well ______.

A. to spent　 　　B. spent　 　　C. being spent　 　　　D. spending

23.　　 I send you 100 dollars today, the rest ______ in a year.

A. follows　 　B. followed　 　C. to follow　 　　　D. being followed

22.　　 ________ in a white uniform, he looks more like a cook than a doctor.

A. Dressed　 　　B. To dress　 　　C. Dressing　 　　D. Having dressed