V. Give the correct form of the words in brackets.
1. The____of computer opened a new era in the history of mandkind INVENT
2. With breathing equipment, man can swim____underwater for a long time. FREE
3. At recess, the ______ students often play basketball, but they never ENERGY
have time to play the whole game.
4. I’m _________________ to give you a ride to the station. PLEASE
5. It is _______to have a toothache. PAIN
6. We are having the _______holiday of our life. GOOD
7. The_______must be under 25 years old in this competition. CONTEST