Choose the Prefix
Make it Negative
Complete the Sentence
Fix the Mistake
-ED or -ING
100

__fair

un-

100

happy

unhappy

100

The chair is very hard. It is ____."

Uncomfortable

100

disnecessary

unnecessary 

100

The movie was very ____ (bore). 

boring

200
__agreeable

dis-

200

honest

dishonest

200
He always forgets important things. He is ____.

unreliable

200

unpolite

impolite

200

I felt ____ before the exam. (worry)

worried

300

__complete

in-

300
patient

impatient

300

She has never done this before. She is _____.

Inexperienced

300

discorrect

incorrect

300

The instructions were _____. (confuse)

confusing

400
__possible

-im

400

legal

illegal

400

The information is not exact. It is ____.

Inaccurate

400

inmature

immature

400

We were _____ by the result. (surprise)

surprised

500

__logical

il-

500

regular

irregular

500

He acts without thinking about the results. He is _____.

Irresponsible

500

unrelevant

irrelevant

500

The hike was completely _____ (exhaust). 

exhausting