Fill in the gaps with the neutral suffixes (-able, -al) to make a proper derivative. Then
listen and repeat
the words. Note that these suffixes do not change the position of the word stress.
Gap-fill exercise
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!