Kids Riddles

Question: If you have two twins, three triplets and four quadruplets; how many people do you have?

Question: What always goes to bed with its shoes on?

Question: I have four wings, but cannot fly.
I never laugh and never cry;
On the same spot I'm always found, toiling away with a little sound.

What am I?

Question: What do thief's get for stealing calendars?

Question: You struggle to regain me.
When I'm lost, you struggle to obtain me.
I pass no matter your will,
but I'm your slave to kill.
What am I?