In summer milk will quickly go bad_____ it is put into a fridge.
—What are we going to do after school?—What about ______ basketball?
You can improve your English ______ practicing more.
—There was thick haze(雾霾)in our city this spring. What do you think of it?—I think ______ cars we drive, ______ pollution our city will have.
Don’t talk ______. Your grandmother is sleeping now.
—Why don’t you buy this beautiful dress? It’s beautiful.—Because I have run out of my pocket money.