1 It is （ ）that she should come late.
A a pity B no wonder C shame
选B为什么不行?答案是A
It is a pity that + 主语+ should do 用虚拟语气.而no wonder 不能.
2Cars do cause us some health problems in fact far more serious （ ）than mobile phones.
A one B ones C it D those
答案是B.我是选D.为什么D不行,those能当替代词吧?
one 和that 都可以替代前面的名词,但用法不同：that 特指； one 泛指,
本题是泛指.
3We need a new cupbosrd for the kitchen.So Peter made （ ）
from some wood.
A it B one
答案是B A为什么不行?
one 同上,泛指,it 是指前面提到的某个名词本身,如：I have a book,and it is new.(it 就是book.)