What has teeth but cannot eat?（打一农作物）
What fruit is never found singly?
What can pierce one's ears without a hole?
What tree is always very sad?
What is black when it's clean and white when it's dirty?
I am not a fish but look like a large fish and live in the sea?
What is deaf and dumb but always tells the truth? （打一物）
What animal wears big black glasses on its face?
What's the poorest bank in the world?
Ten plus ten is ten.Ten minus ten is ten（打一物）
What gets larger，the more you take away？
You have it．You read it．There're some pictures in it?
How many sides does a circle have?
What is the longest word in the world?
It has a head,but no neck.It has a body,but no warmth.It has no feet,but can trave.