C Underline the correct item.
e.g. Factories emit/burn toxic fumes.
13 Water pollution can wipe out/drink up fish and plant species.
14 I can’t make up/out what it says here.
15 Acid rain gathers/poisons trees and plants.
16 Solar/Oxygen power can be used to heat homes.
17 Can I join/volunteer the Eco-helpers club?
D Complete the sentences using the Present Perfect Continuous form of the verbs in brackets.
e.g. She has been trying to raise money for the zoo for months. (try)
18 He ............................................... the environment for over ten years. (study)
19 We ......................................... hard to build nesting boxes. (work)
20 It ........................................... for two days. (rain)
21 He ........................................... money to Greenpeace for a long time. (donate)
22 The government ................................... to reduce pollution for years. (try)
23 I .............................. to clean out ponds for a year now! (volunteer)
E Fill in the question tag.
e.g. Recycling isn’t that hard, is it?
24 Camels live in the desert, ......................?
25 Sarah didn’t collect the cans and newspapers, ......................?
26 Sarah has called her mum, .....................?
27 Gorillas are amazing animals, .................?
28 It can’t be true, ......................?
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