9 Half of the people who were invited didn't appear.
10 The festival which is in the late March or early April is called Easter.
15 Good morning ladies and gentlemen. My name is Phong. Today I will tell you how to save electricity.
16 Most of us use a lot of electricity. You can reduce the amount of electricity by some ways.
17 Turn off all the lights, TV and radio before we go out.
18 Replacing an ordinary 100 watt light bulb with an enerygy- saving bulb.
19 If you follow the rules, you will save money as well as conserve the earth's resources.
