Can you believe that in ____ a rich country there should be ___many people.

It’s important __________ a dancer to be healthy.[ ]

Is this your ruler? – Yes, it’s ________

Must I stay here with you?– No, you ______. You may go home, but you _____ go to the net bar(网吧).

It is thought that one billion people I the world, _is half the word’s workers, earn their living by farming.