两道英语提,哥哥姐姐们,1.Don't interrupt your father .He is busy____ （w

两道英语提,哥哥姐姐们,
1.Don't interrupt your father .He is busy____ （write） something.
2.The boy ____(go)to fly kites tomorrow.aren't they?
3.I ____(meet)an old friend of mine on my way to the museum last sunday.
4 .There was a konck at the door when we ______(have)supper.