—Doctor, I am afraid I am getting fat these days. — _____ slim, you should change your diet and lifestyle.
You had better finish _______ your homework.
—May I speak to John? ---Sorry, he Japan. But he in two days.
___________ is better than to receive.
Camels can walk a long way without __________ .
It Yang Liwei about 21 hours the earth 14 times in his spaceship.