How do you know when a motorcycle policeman is happy
Whatis Black and white and read （red） all over?
What do tigers have that no other animals have?
What can't be used until it's broken?
How many people are buried in that cemetery?
Which eight-letter word has one letter in it?
Four girls have a basket with four apples in it.How
What has a soft bed but never sleeps,a big mouth but
What kind of man can raise things without lifting th
Who isn't your sister and isn't your brother,but is
When the boy fell into the water,what's the first th
What is ＂four feet on four feet waiting for four fe
When Columbus discovered America,where did he stand?
What never asks questions but always gets answers?
What is the center of gravity?
What 5-letter word has six left when you take 2 lett
What is black when it is clean and white when it is
What's the difference between a monkey and a flea?
What do you drop when you need it and take back when