★★3个初二英语选择题....急 写一下为什么★★

All of the students each _____ an English dictionary.
[选B,each放在复数名词后面，做同位语，主语还是是前面的复数名词。]
A has
B have
C owns
D has got

There are many trees on ______ sides of the street.
[选D,首先，街道只有两边，排除表示三者或三者以上的every和all,其次，each后接单数名词，both后接复数名词，而sides是复数名词，故选both.]
A every
B each
C all
D both

English is used _____ business _____ countries _____ the world.
[选C,be used for(被用于……)，between countries all over the world(在世界各国之间)，between强调“每两者之间”]
A by;between;around
B on;among;in
C for;between;all over
D as;among;in

A,D,B
1.each后接单数,就近原则不用管All
2.道路的两边就是Both sides
3.先看第二空.两个以上的国家之间用among,所以排除A,C.但是英语不能被作为商业所以不用as

1.B
应该用单数谓语,而ACD都是复数

2.D
表示"两者都",用both,三者及以上用all

3.B
on表示"在某方面"
三者以上之间，用among,两者之间用between
"在世界上"用in