The world’s population has grown _____ it was in 1800.
--- Did you arrive at the stadium early yesterday afternoon? --- Yes. It was not yet 2 o’clock I got there.
I don’t think the risk they took ______ the poisonous snake is worthwhile.
There’ s a big difference between saying you’ll do something and ________doing it.
—I have two suggestions: one is to go to the cinema, the other is to have a drink.—Well, personally I prefer the _____one. I don’t like films very much.
As we all know,parents are concerned ________their children’s study,because it is concerned ________their future.