--- Someone is knocking at the door. Go and see who it can be.--- It__________ Peter, because he has gone to New Zealand.
Camels can walk a long way without __________ .
It Yang Liwei about 21 hours the earth 14 times in his spaceship.
Xiaoli hasn’t her parents for a month. What happened?
—What does the lady look like? —_____
---What do you think of Beijing Opera? ----.