1）What do we say that a river is very rich?
Because a river has two banks.
因为一条河有两个银行.(在英语中银行和河岸英文都是bank)
2)What will she do if a man-eating tiger is running after her?
Nothing.Because she's a woman.
3)What is smaller than an insect's mouth?
Anything it eats.
4)What's too much for me,just right for two,but nothing at all for three?
A secret.
5)On what day of a year do soldiers start wars in history?
March fourth.When a war breaks out,they'll have to march forth.
6)How many feet are there in a yard?
It depends on how many people are standing in it.
7)Which horses have six legs?
All horses have forelegs (four legs) in front and two in back,so they all have six legs.