Long Riddles and Answers

Question: What goes round the house and in the house but never touches the house?

Question: Why can't Kevin, who is now living in Canada, not be buried in the USA?

Question: Railroad crossing without any cars. Can you spell that without any R's?

Question: What are the next 3 words in the sequence: j,f,m,a,m,j,j,a,s_,_, and _?

Question: 1 11 21 1211 111221 312211 13112221 1113213211 what comes next?