You _______ smoke .You are only 14 and it isn’t allowed.A. don’t have toB. mustn’tC. needn’t
—What color is it? —It’s ____ blue , it’s ____ blue ruler.
I have ____ uncle and he has ____ aunt.
—Good evening,Tom. —___________,Cindy.
含有相同元音音素的一组字母是_____
— Are you willing to live in Antarctic (南极) one day? —_______ It sounds exciting, but it’s a little cold there.