A. Rewrite the following sentences without changing their meaning.
43. I’m going to buy a hybrid car because it doesn’t use as much gas as other cars.
→ I’m going to buy a hybrid car because it uses less gas than other cars.
44. China is the largest producer of wind power in the world.
→ China produces more wind than any other countries in the world.
45. Although solar panels are quite expensive to install, you’ll save money on electricity in the end. (BUT)
→ Solar panels are quite expensive to install but you'll save money on electricity in the end.
B. Combine the following sentences using “and” or “but”.
46. This backpack has small solar panels on it. You can actually use them to charge your phone.
→ This backpack has small solar panels on it and you can use them to charge your phone. .
47. Nuclear power is a clean and efficient way of producing electricity. It may be dangerous.
→       Nuclear power is a clean and efficient way of producing electricity but it may be dangerous