—How many students are there in your school? —About_______ students, I think.
--- Do you mind if I smoke here? --- ______. You can go to smoke in the next door.
--- Why are you in such a hurry, Billy? --- There ______ a TV show “I am a singer! ” in ten minutes.
It will be bad for your health to eat ______ food and take ______ exercise.
______ exciting news! We ’ ve never had ______ long vacation before.
You leave your kid alone at home. It’s very dangerous.