-It's cloudy here. Please take an umbrella.-__________.
So many people! Could I stand here? ____ Don't you see the sign "Line up, please"?
If you for your favorite TV programs, you will feel sleepy.
—Where is your brother? —He has gone to Beijing. He back in three days.
—Ann, I am worried I’m getting fatter. What shall I do?—I think you should eat________ food and do more exercise.
they are twins, they don’t look the same at all.