What always goes to bed with his shoes on?

死大的（打一英文单词）

What has teeth And can't bite?

Which eight-letter word has one letter in it?

The greater it is The less you see of it.

What is the worst weather for mice?

What is it that passes in front of the sun yet casts no shadow?

What is it that has four legs And one back, Yet can't walk?

a cat,eyes like a cat,a tail like a cat ,but isn't a cat?

What is the center of gravity?