30. Last year in the middle of the most severe drought in recent history, the already dwindling tribe finally ( ) to leave the forest and to look for a new home. A. has decided B. decided C. had decided D. decides ...

24. Remember to turn off the lights when you leave, ( )? A. shall you B. won’t you C. do you D. wouldn’t you ...

18. The article suggests that when a person ( ) under unusual stress he should be especially careful to have a well-balanced diet. A. is B. were C. be D. was ...

12. Although he knew little about the large amount of work done in the field, he succeeded ( ) other more well-informed experimenters failed. A. which B. that C. what D. where ...

6. Since he is angry, we him alone. A. had better leaving B. must leave C. can leave D. might as well leave ...

1. Must I hand it in right now? No, you . A. needn’t B. can’t C. shouldn’t D. mustn’t ...

15: The United Kingdom is a constitutional monarchy. The （ ） has very little power. A: queen B: monarch C: prime minister D: king ...

3: Normally, it will take （ ） years to get an undergraduate degree. A: 3 B: 4 C: 5 D: 2 ...

16: The flag of the United Kingdom, known as the Union Jack, is made up of （ ） crosses. A: one B: two C: three D: four ...

8: The first known settlers of Britain were （ ）. A: the Jutes B: the Celts C: the Saxons D: the Iberians ...