1) The band is going to play martial music
2) The bus is going to leav soon
3) If it is going to rain. there will be black clouds in the sky (вот тут стоит перепроверить, я не уверен в овтете)
4) What are you going to do next week
5) We are going to visit our granny on weekend
6) He is going to compose the new melody for the scool party