Ответ:
Solution:
- If we drove (drive) more slowly, we would save (not use) so much petrol.
- If we only bought (buy) the food we needed, we wouldn't throw (not throw) so much food away.
- If we borrowed (borrow) books and DVDs from libraries, we wouldn't have to (not have to) buy them.
- If we drank (drink) water from the tap rather than bottled water, we would save (save) a lot of money.
- If everyone wore (wear) an extra jumper or two in the winter, they could turn (can) down their heating and save money.
- If degree courses were (be) shorter, students would spend (spend) less on tuition fees and accommodation.
- If we turned off (turn off) the lights every time we left a room, we would not use (not use) so much electricity.
