Someone who doesn't like to share is ...
selfish
Someone who works very hard is ...
hard - working
Someone who doesn't talk a lot is ...
quiet
Someone who knows a lot is ...
clever / smart
Someone who is scared of many things is ...
scared
Someone who talks a lot is ...
talkative
Someone who makes people laugh is ...
funny
Someone who always talks to many people and smiles a lot is ...
friendly
Someone who isn't scared of many things is ...
brave
Someone who is easy (to get along with / easy to be friends) with is...
easy going
Someone who doesn't know a lot is ...
dumb
Someone who shares with other people is ...
kind
Someone who doesn't work hard is ...
lazy
Someone who is quiet and nervous around other people is ...
shy