用方框中所给单词的适当形式填空，每个单词限用一次。

danger, health, lucky, carrot, cross

---How about the kids in your neighborhood ?  --- They are happy and ____________.
You must be careful when you __________ the street.
---I passed the last exam.   --- Oh, you’re really a _________ dog.
---Can I help you, madam?   ---Two kilos of ___________, please.
Now lots of wild animals are in _________. We must try our best to protect them.