It has five wheels, though often think four, You cannot use it without that one more, You can put things in it, you can strap things on top, You can't find it in the market, but you can still go shop. What is it?

People make me, save me, change me, raise me. What am I?

What jumps when it walks and sits when it stands?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

What work can one never finish?

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?

It can't be seen, can't be felt, can't be heard, and can't be smelt.
It lies behind stars and under hills, And empty holes it fills.
It comes first and follows after, Ends life, and kills laughter.
What is it?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

What goes through cities and fields, but never moves?