—Can I help you, boy? —Yes. There is _________wrong with my bike.A. something B. anything C. nothing
---It will be my turn. I feel a bit nervous. ---________. You can make it.
The population of China is _________ than that of Australia.
You don't know __________________________.
—He hardly spent any time on his subjects, _________? —_________, so he does badly in his lessons.
________ people have been to the famous ________ mountain.