1. Lesson E
Can you live without it?

2. A suffix is a group of letters added after a word or base.
Prefixes and Suffixes
A prefix is a group of letters added before a word or base to change its meaning and form a new word.
A suffix is a group of letters added after a word or base.

3. anticlockwise
misunderstand
quickly
depress
replay
unfit
prepay
dislike
useful
exchange
wireless

4. harmful
helpless
careless
beautiful
harmless
helpful

5. harmful careful harmless useless helpful
educational
careful
communication
harmless
disadvantages
useless
helpful