Derivatives

An exercise by Konstantinos Papadamos

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
Write the nouns derived from the following verbs

e.g prove -
1. avoid -
2. agree -
3. mix -
4. add -
5. observe -
6. deny -
7. collect -
8. permit -
9. fail -
10. resign -