Ex. 4
Which two words can you find in the profile? Complete the rule.
able - ability, creative - creativity, curious - curiously, generous - generousity
The suffix - ity is used to turn ________ into abstract ________.

Ex. 5
Use one word from each pair to complete the sentences.
1. Kelvin was __________ to make new devices from parts that he found.
2. Kevin's __________ is obvious in the many imaginative things he has developed.
3. Kelvin was _________ about how things work.
4. Thanks to the __________ of sponsors Kelvin was able to travel to the USA.