Long Riddles and Answers

Question: Change a long pause into a short one by doubling a letter.What are the words?

Question: What sport starts with a T, has four letters, and is played around the world?

Question: I'm small but big, i hide behind you but come out when you fall... What am I?

Question: 4 people walk onto a bus, there are only babies on the bus what is on the bus

Question: Instruction manual, to and fro, if it’s wrong you'll still go - what is it?