英语语法,高手HELP HELP~!

英语语法,高手HELP HELP~!
1 He is ____much ofa gentleman to fight.
A soB asC very D too
(为什么这里不选A,要选D呢?翻译为如此多,不可以吗?)

2 How long ____?
A yousuppose did it last B do you supposeitlasted
C did yousuppose it lastD you suppose it lasted
(这个不懂为什么B,不可以选C吗?)

3 Smith had some trouble____the man'saccent
A to understand Bunderstanding
C for understandingD withunderstanding
(不是have troublewith sth 吗?为什么题目选B了?)

4 She turned,_____instinct,to her father for protection.
A byBinC onDfor
(题目选A,不可以选D吗?for不是有因为,由于的意思吗?)

5 He likes _____
A writingandto be writtenB to andto bewritten
C to writeand beingwrittenD writingand written
（答案选B了,我选的是A,他喜欢写作,想成为,后面用不定式表将来,那为什么前面也要用TO?）

6 Many a person ____that kind of experience
A haveB hasC having Darehaving
(many a 不是许多的意思吗?那不是复数吗?为什么选B 不选A呢?)

7 You can makesome modifications to the plan ____you find anything impractical.
A even thoughBunlessC nowthatDin case
(答案选D,为什么不选B)

8 I certainly appreciate ______us about the delay in receiving the materials because we hadplannedto begin work tomorrow.
A he tellingB he tellChistellingDhimtelling
（答案是C,我选A了）
9 At the age of eleven,Sophiawas already something ____ apoet.
A ofB forC likeD as
（答案是A,还是不懂）

10 What he said just now had little to do with the question _____discussion.
A onB inCunderD at

11 Although notaneconomist himself, Dr.Smith has long beenasevere critic of the government's ______ policies.
A economicalB economic C economy D economics

12 My gloves are ____,I must buy a new pair
A worn outB broken throughC at handD out oforder

13 When Mr.Jones gers old ,he will____over his business to his son.
A take B thinkChandD get
(为什么不选A?答案选C)

14 My uncle from the company because he was made to undertake dangerous assignments.
A removedB emerged C resignedD shifted
(答案选C)

15 They set off by car and ____the nearest town.
A made forB made afterCmade outDmadeto
（答案是A）

16 She had heard strange footstepsin the house several times , so she hired a private detective to ____the matter.
A go into B put intoC look into D take into

17 I don not know about him,____comment on him behind his back.
A let aloneB let goC leave aloneDtake leave

18 The youth often get _____strange thoughts and dreams.
A familiar toB engagedwithCconcernedaboutDcaught up in
（答案选最后一个）

题目比较多,希望高手解答~~~无线感谢