1. Because of the shortage of water, we should use it very ___ (effect)
2. Saving money is ____ to all of us. (profit)
3. ______ from his friends made him sad. (separate)
4. Have you ever met Susan ______? (recent)
5. You should always try to behave quite _______ (ordinary)
6. Scientist succeeded in _______ oxygen. (solid)
7. Susan won the prize for _____ of attendance at school last month. (regular)
8. He is responsible for the heating ______ of this building. (install)
9. Energy-saving bulb should be used to save _____. (electrify)
10. A _____ is the person who installs and repairs thing such as water pipes, toilets, etc....(plumbing)
1. effectively
2. profitable
3. being separated
4. recently
5. ordinarily
6. solidifying
7. regularity
8. installation
9. electricity
10. plumber
