一些高中英语介词单选 有答案求详解

介词↓（不知道这些是不是都是固定搭配，如果是的话麻烦只写下是什么固定搭配就好 谢谢！）
There ara many beautiful islands____ the eastern coast of the country
填：off

Buy whatever is necessary______the library
填：for

You may have a choice ____ of his or my leaving
填： of

There ara some moments it is wvery hard to make a choice____two things
填：between (这道我对了 上面那道我也填的between 所以不明白了 前面都是a choice 为什么填的不同？)

The women workers in that factory are paid______
填：by the hour

The train leaves at 6:00pm so I have to be at the station____5:40pm at latest
填; by

You have only 5 minutes to change the black blouse_____a white one
填：for

She kept on asking me whether I could excuse her______attending the meeting
填：from

We are looking for water,flour and sugar______which to make a cake
填：from

As a child,you should learn to be independent______ your parents as early as possible
填：of

They have a good opinion_____you for what you are doing
填：of

We found her house easily_____the address she had given us
填：to

The boy was reading a book____the dim light of a oil lamp
填：to

Einstein used a check_____$1500______a bookmark and then he lost it
填：for:as

The problem_____which they referred at the meeting is _____great value
填：to;of

———kindness,the woman put some notes into the boxes before the disabled man
填：out of

In that country ,sales of cigarttes have been decreased______as much as 30% in the past ten months
填：by

Every Sunday afternoon there are many popular songs_____
填：on the air

If you have any problem_____you composition, never hesitate to come and ask me
填：with

Upon arrival,the firefighters made a dive_____the buring house
填：for

The police accused him ______his stealing a bicycle in the market
填：of

谢谢TOT
额 还有一道
Our neighbor has_____ours
填：as big a house as （虽然我写对了 不过对倍数表达法不是很了解 as……as中间填写顺序可以讲解下么？

1) 这个国家的东海岸有很多岛屿！岛屿与海岸应该不是连在一起，有一段距离对不对？那么就用OFF，如果接壤，就要用 TO.
2) FOR 的最基本意思是 为了。。。，这句就是为图书馆买所有需要的东西。。
3) choice,是选择，choice of ....选择什么
4) between,表明在两者间，你上一题，是 my or his leaving,如果是 my and his leaving,就应该是between,但是上面一道是 or ，所以是 choice of my or choice of his leaving?
5) by the hour...意思是按照小时来领工资，by 有按，靠，通过，经过的意思；
6) by 还有在...之前的意思，这句就是最迟在5点40分之前要到!
7) Change ... for ....把...换成...,也可以用 change ....to .....
8) excuse somebody from doing sth....免除某人做某事的责任
9) make sth from sth...把....通过物理变化来做成... (也有make sth of sth，不过用of的话，就是化学变化)
10) be independent of....独立于。。。。
11) opinion/impression of sth/sb 对某人的观点/意见/印象
12) 这句应该是 by 或者 according to, 用to 的话，我觉得不对，我现在没时间了，下次核实下！
不译了，下班了，自己好好把以前的书看看！

1. of , about

2. by

3. from

4. on

5. at

6.around

7.out of

8. away from