underline a mistake and correct.(gạch chân một lỗi sai và sửa lại 1.My children is at home now. 2. His teeth is not white. 3. He often is late for school. 4.Are their mum often late for work ? 5.He doesn't often watches T.V. 6. They sometimes don't do homework. 7.Do they play usually games? 8. Does he often studies English on Monday? 9. Their dad don't go to work on Sundays. 10.Does he has a new car? 11. There aren't any water in the cup. 12.My feet isn't long. 13.He studys English every day. 14.Does he goes home late everyday?