4 Tick (✔) what saves energy and cross (X) what doesn't save energy.

Решение:

Отмечаем действия, которые помогают экономить энергию, и вычеркиваем те, которые ее тратят.

• a driving a car (X)
• b having a solar panel on the roof (✔)
• c leaving the TV on when you aren't watching (X)
• d not leaving a computer on stand-by (✔)
• e riding a bike to school (✔)
• f using coal to heat the house (X)
• g wearing T-shirts at home in winter with the heating very high (X)

Ответ: a (X), b (✔), c (X), d (✔), e (✔), f (X), g (X).