1.What season is the most dangerous one?2.What is easy to get into but hard to get out of?
3.What is smaller than an insect mouth?
4.What is white when it is dirty?
5.Which four letters is the thief afraid of?
6.Why is a river very rich?
7.Two little brothers,one lives on one side,the other on the other side,they hear what you say,but they do not see each other.