英语改写句子：用非谓语做状语改写下列句子
1.While we were watching the football match,we heard the doorbell ring.
2.James was reading a story and was completely lost to the outside world.
3.These animals from the tropical areas will die unless they are taken good care of.
4.Uncle Li reads newspapers every day so that he cankeep up with the times.
5.A small plane crashed into a hillside and killed all four people on board.
6.The girl was frightened by the strange noise and dared not go to sleep that night.
7.They hurried to the station but were only told that the train had already left.