用不定代词填空

问题描述:

用不定代词填空
1.-Is _____ here today?
-Yes,we're all here ______ is away.
2.There is _______ wrong with my bike.It doesn't work.
3.There is ______ knocking at the door,please go and see who it is.

1.anybody/nobody
2.something
3.somebody/someone