=>
A/
1. F 
2. F
3. F
4. T

B/
1. These include nuclear, water, solar, wind, and geothermal power, as well as energy from new, nonpolluting types of fuels.
2. Nuclear power plants efficiently produce large amounts of electricity without polluting the atmosphere; however, they are costly to build and maintain, and they pose the daunting problem of what to do with nuclear wastes. 
3. Every source of energy has its disadvantages. One way to minimize them is to use less energy.

III/
1. We first went to Edinburgh, which is the capital of Scotland.
2. This violin belonged to my father is worth a lot of money.
1. The award which was presented to him in 2005 sits proudly on his mantelpiece.
2. Lock Ness , which people know for its friendly monster, is 37km long.
IV/
1. The couples living in the house next door are both college professors.
2. A knuckle is a point connecting a tinger to the rest of the hand.

3. He was the first man to leave the burning building.
4. The last person to leave the room must turn out the lights.
5. I have some homework to do tonight.
6. The film they are talking about is fantastic.
7. This is the book I'm looking for.