Complete the sentences with words from C in the vocabulary section.

1. We should consider the issue of when shopping for fruit and vegetables and try to buy local produce.
2. Most recent models of washing machines and other domestic use less power than older comparable models and are quite .
3. The company is trying to reduce its by allowing fewer foreign trips and encouraging the use of video-conferencing.
4. This car is a real . It has a very high fuel .
5. We’re our energy use at home and trying to less power.
6. The planet only contains a amount of oil and coal. One day the will run out.