Why not ______ your teacher for advice when you don’t know ______ the problems?
---How does he usually spend his weekends? ---He spends as much time as he can _______ computer games .
Nobody could tell me the way because ________ people were there in the night.
We should learn from LeiFeng and think less of ________ than others.
Is there_______ about animals on the Internet?
John is ______ honest boy. He has______ useful book.