1.It is no use arguing _______ the plan because it has been rejected. 【 C 】
A. with
B. against
C. for
D. on
【答案解析】：argue作动词时，意为“争论；争吵；争辩”。argue for意为“为……辩护”；argue with sb about / over sth指“就某事和某人争论”；argue against意为“据理反对；争辩……”。根据句意，应该用for.
2.The boy complained _______ a pain in his stomach. 【 D 】
A. with
B. for
C. in
D. of
【答案解析】：complain of：抱怨，说自己有病。句意：这孩子说他肚子痛。
3.It _______ me three years to draw the beautiful horses. 【 A 】
A. took
B. paid
C. spent
D. cost
【答案解析】：cost 的主语通常是事或物（包括形式主语 it）；spend 的主语只能是人，不能是事或物；take 的主语可以是事或物（包括形式主语 it），也可以是人。cost 的宾语通常是钱，take 的宾语通常是时间，而 spend 的宾语则可以是时间或钱。这句话运用的句型是it take sb sth to do sth.
4.We are all concerned _______ her safety. 【 A 】
A. about
B. in
C. of
D. with
【答案解析】：be concerned about：关心，担心。句意：我们大家都担心着她的安全。
5.It is important to ________ your skin from the harmful strong sunlight. 【 A 】
A. protect
B. prevent
C. stop
D. keep
【答案解析】：protect …… from ……意为“保护……免受……”
6.Water is composed _______ hydrogen and oxygen. 【 A 】
A. of
B. with
C. for
D. about
【答案解析】：be composed of：由…组成。句意：水是由氢与氧化合而成的。
7.They prefer to _______ the rest of the morning walking in the garden. 【 D 】
A. spending
B. spent
C. be spending
D. spend
【答案解析】：本句运用的是prefer to do sth这种用法。
8.Please remind me _______ her this note. 【 B 】
A. leave
B. to leave
C. leaving
D. left
【答案解析】：remind sb to do sth：提醒某人做某事。
　　句意：请提醒我留给她这张纸条。
9.The two girls competed with each other ______ the highest mark. 【 A 】
A. for
B. with
C. to
D. against
【答案解析】：compete for： 比赛…夺取compete against/with： 和…竞赛句意：这两个女孩互相竞争，以取得最高分。
10.At any rate I did not succeed _______ myself understood by you. 【 D 】
A. making
B. made
C. to make
D. in making
【答案解析】：succeed in doing sth： 成功做某事。[page]
11._______ for your laziness，you could have finished the assignment by now. 【 A 】
A. Had it not been
B. It were not
C. Weren‘t it
D. Had not it been
【答案解析】：句意：要不是你懒惰，到现在你就能完成任务了。本题是一个省略if的虚拟条件句，主句用could have done表示与过去事实相反，条件从句应用had done形式，had要提前构成倒装。
12.The new discovery _______ be of great service to mankind. 【 A 】
A. is bound to
B. is bound for
C. be bound to
D. be bound for
【答案解析】：be bound to：注定要，一定会。本题中主语是The new discovery，所以谓语动词要用is.句意：这项新发现对于人类必定大有用处。
13.Sickness often _______ eating too much. 【 D 】
A. as a result of
B. result of
C. result in
D. result from
【答案解析】：本题考查result 的词组辨析。
　　as a result of：由于…的结果result in：导致result from：由…造成，因…而产生
14.It took me a month to get rid _______ the cough. 【 C 】
A. for
B. as
C. of
D. over
【答案解析】：get rid of：摆脱掉，处理掉
15.They are eager _______ abroad. 【 C 】
A. travel
B. travelled
C. to travel
D. travelling
【答案解析】：be eager to do sth：渴望做某事。句意：他们盼望出国旅行。
16.I would love ________ to the party last night but I had to work extra hours to finish a report. 【 B 】
A. to go
B. to have gone
C. going
D. having gone
【答案解析】：本题考查非谓语动词与虚拟语气。would love to do 为一固定搭配形式，其中不定式表示想要做的动作。但此句中but 连接的句子说明其实动作并没有发生，所以这里要用虚拟语气表示与过去事实相反，选用B项。
17.________ in thought， he almost ran into the car in front of him. 【 C 】
A. Losing
B. Having lost
C. Lost
D. To lose
【答案解析】：这里分词短语的意义应为“As he was lost in thought ”，意为“由于陷入沉思”，这儿填入过去分词短语，表示一种状态，用作原因状语。
18.—You were brave enough to raise objections at the meeting. 【 D 】
—Well， now I regret ________ that.
A. to do
B. to be doing
C. to have done
D. having done
【答案解析】：regret后所跟动词有to do 与doing两种形式，不定式表示“为做某事而遗憾”， doing 表示“为做过某事而后悔”。“having done”则更强调动作已发生而无法挽回。
19.The missing boys were last seen ________ near the river. 【 A 】
A. playing
B. played
C. play
D. to play
【答案解析】：所填的词为主语补足语，因其后有明确的地点，补足语表示动作当时正在进行中，所以只能使用playing.
20.The visiting minister expressed his satisfaction with the talks， ________ that he had enjoyed his stay here. 【C 】
A. having added
B. to add
C. adding
D. added
【答案解析】：此处所填的词与其后的宾语从句构成状语，表示伴随情景。add是及物动词（有自己的宾语从句），此处adding表示主动意义，所表示的动作与谓语动作同时发生。