1.elegant; elegantly

Susan always dresses and behaves ¡¡¡¡¡¡¡¡¡¡¡¡ . 

He wandered about,looking very confident in his ¡¡¡¡¡¡¡¡¡¡¡¡ new suit. 

2.except; exception; exceptional

This is an ¡¡¡¡¡¡¡¡¡¡¡¡¡¡case; I have never seen anything like this. 

I don’t know anything about the case ¡¡¡¡¡¡¡¡¡¡¡¡what I read in the newspaper. 

With very few ¡¡¡¡¡¡¡¡¡¡¡¡,private schools get the best exam results. 

3.consume; consumer; consumption

Gas and oil ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡always increases in cold weather. 

Martha would ¡¡¡¡¡¡¡¡¡¡¡¡¡¡nearly a pound of cheese per day. 

Health-conscious ¡¡¡¡¡¡¡¡¡¡¡¡¡¡want more information about the food they buy.