having done C. to have done D. to be doing

12.Road accident victims _______ almost a quarter of the hospital’s patients.
A. take out B. take up C. make out D. make up

13.Thirty cattle _______ seen eating grass on the side of the mountain at the moment.
A. is B. are C. was D. were

14.However, there was nobody that I could _______ help.
A. turn B. turn to C. turn for D. turn to for

15.The boy was so _______ as to enter the headmaster’s office without knocking.
A. mild B. bold C. surprised D. surprising

　
答案与分析：
一、
1.surrounded 2.horbours 　 3.conferences 4.settled 　5.paragraphs
6.mild 　 7.possession　8.voyage  9.promised 10.extremely
11.threatened12.regretted　13.graduation 14.value 　 15.conclusion

二、
1.D prove to be 证明是。prove此时是系动词，不用被动语态。
2.A pick out 挑选出。
3.B doubt用于否定句时要用that引导。
4.A die down指…逐渐平息，强调从强到弱这一变化的过程。
5.C threaten to do 是固定搭配，表示‘威胁要干…’。

6.C around the corner即将来临。
7.D can’t bear to be laughed at = can’t bear being laughed at无法忍受被人嘲笑。
8.A to one’s regret令人遗憾的是。
9.D promise sb. sth.答应给某人某物。
10.D value做动词，表示‘珍视，重视’。

11.B regret having done=regret doing 后悔曾做过某事。
12.D make up 组成，take up 占时间或空间。
13.B cattle作主语时，谓语动词必须用复数。
14.D turn to sb. for help 向某人求助。
15.B so…as to do sth.是习惯搭配，bold作形容词，意为‘大胆的’。
 
 

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