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?

What question can you never answer yes to?

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?

What's the only room from which no one can enter or leave

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

I am a type of word that is spelt incorrectly or used differently, on purpose for humour. What am I?
Hint 1: You can find me in a joke.
Hint 2: I am a play on words.

One absent-minded ancient philosopher forgot to wind up his only clock in the house. He had no radio, TV, telephone, internet, or any other means for telling time. So he travelled on foot to his friend's place a few miles down the straight desert road. He stayed at his friend's house for the night and when he came back home, he knew how to set his clock. How did he know?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?