1. There are many....celebrations ..... throughout the year (celebrate)

2. These candies melt and become.......sticky.. if you keep them in the pocket (stick)

3. On this......joyjul.... occasion. I'd like to thank you all for your contribution to our success (joy)

4. He has been one of the most effective.....activities..... in the "Keep Our City Clean" campaign (active)

5. It was very.......considerable... of him not to play the piano while I was asleep (consider)

6. An old.....acquaitance... of my father's showed me round the city during my stay there (acquaint)

7. We love our grandmother for her....generousity......... (generous)

8. We enjoy that teacher's class because he had a fine sense of......humor... (humorous)