1. (2016·黔南) 根据句意，用括号内所给单词的适当形式填空。

1. （1） Smoking is (harm) to our health.
3. （2） The Smiths live on the (nine) floor of the apartment.
5. （3） The keeper tells the visitors (not touch) the tigers. It's very dangerous.
7. （4） The woman looked at the young man (angry) and didn't say a word.
9. （5） It's still raining. We'd better keep(wait) for a while.