7 Choose the correct words to complete the sentences. 16 Burning fossil fuels causes global warming / renewable energy. 17 Soon we will give up / use up all the coal in the world, and there won't be any left. 18 Some types of bird are dying out / closing down. 19 People mustn't cut down / use up trees because it destroys the world's forests. 20 I don't want to live in a big city because there's too much greenhouse gas / pollution.

16 Burning fossil fuels causes global warming. 17 Soon we will use up all the coal in the world, and there won't be any left. 18 Some types of bird are dying out. 19 People mustn't cut down trees because it destroys the world's forests. 20 I don't want to live in a big city because there's too much pollution. В этом задании нужно было выбрать правильное слово из пары, чтобы предложение имело смысл. Например, сжигание ископаемого топлива вызывает глобальное потепление, а не возобновляемую энергию.