—Who________your parents talking________?—They are talking to my brother.
I often eat _____vegetables and sleep______.
The Changjiang River is one of __in the world.
It’s dark(黑的) now, and I can’t see anything–The light is behind the door, you can __________
I’m not full. Could I have ____________ cake?
–__________do you exercise? – I exercise three times a week.