—Tom looks very sad. What’s wrong _______ him?—An accident happened _______ his father this morning.
China is larger than ______ in Africa. (非洲)
---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?