根据句意和汉语注释，在答题卡标有题号的横线上，写出单词的正确形式。Mr. Wu is our teacher. He teaches ______ (we) English.
Smoking is bad to people’s (healthy).
He likes swimming. He is a good ________(swim).
The boy eats too many chocolates and sweet food, so his _______ (tooth) are getting worse.