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

小题1:---How about the kids in your neighborhood ?  --- They are happy and ____________.
小题2:You must be careful when you __________ the street.
小题3:---I passed the last exam.   --- Oh, you’re really a _________ dog.
小题4:---Can I help you, madam?   ---Two kilos of ___________, please.
小题5:Now lots of wild animals are in _________. We must try our best to protect them.