句子改错（共8小题；每小题1分，满分8分）
小题1:You are terrible ill . You’d better stay in bed . ________
小题2:The twins didn’t feel well , but they didn’t come . ________
小题3:There is going to have a dolphin show in the zoo . ________
小题4:Yesterday was her birthday. She bought himself a nice diamond necklace.
小题5:Though he is a five-year-old boy, but he can play computer very well .____________
小题6:It’s hard for him to do so many homework in one day . __________
小题7:Computer is one of the greatest invention. I can’t imagine life without it
小题8:I think doing some exercise can make you feel relaxing after a day’s work.
