5.a)Childish
b)Selfish
c)Forgetful
d)Hard worker
e)Lively
f)Foolish
6.a)That's a hard question because there are many things to consider.
b)He knows lots of good jokes.We like listening to him.
c)Exercise can be fun,and being healthy fells great!
d)We did not relax.The atmosphere was tense and distinctly awkward.
e)I cannot leave the window opne.This is a very dangerous street.
