Word formation B2 verb prefixes and noun suffixes

Paul lied to his teacher, he is very (a)   (honest)

How dare you make silly faces ! I (a)   (approve) of your behaviour.

John is a naughty boy, he´s constantly throwing things at the teacher. He never stops (a)   (behave)

I didn´t think Mr Smith would come to class today! His presence is very (a)   (expect)

You should wear a helmet, when riding a bike. I think your attitude is very (a)   (responsible)

Oh, I thought I had to do exercise 7, not exercise 9. I (a)   (understand) your instructions.

Oh stop getting angry, the bus will be here in 5 minutes. Don´t be so (a)   (patient).

I gave you $ 50 yesterday and I want my money back. I want you to (a)   me. (pay)

In 1492, Christopher Columbus made an important (a)   (discover)

If you´re a teacher you need to motivate your students, they need a lot of (a)   (encourage)