Ex4.Write the verbs in brackets in the passive voice.
ACID RAIN
Acid rain 1) was discovered (discover) by a Scottish scientist in the 1850s, and since the 1960s a lot of research 2)……. (done) about it. It 3)…….. (mainly cause) by factory smog and car fumes. At every moment these chemicals 4)……. (release) into the air. There, they mix with water and 5) ……. (store) in clouds until it rains. Recently, many famous buildings and statues 6)…… (damage) by acid rain and in the future scientists predict that huge areas of forestland 7) …….. (destroy) by acid rain. Acid rain can 8)…… (reduce) if we burn fewer fossil fuels, but we need to act now!
ACID RAIN
Acid rain 1) was discovered (discover) by a Scottish scientist in the 1850s, and since the 1960s a lot of research 2)……. (done) about it. It 3)…….. (mainly cause) by factory smog and car fumes. At every moment these chemicals 4)……. (release) into the air. There, they mix with water and 5) ……. (store) in clouds until it rains. Recently, many famous buildings and statues 6)…… (damage) by acid rain and in the future scientists predict that huge areas of forestland 7) …….. (destroy) by acid rain. Acid rain can 8)…… (reduce) if we burn fewer fossil fuels, but we need to act now!
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1. Acid rain was dicovered by a Scottish scientist in the 1850s, and since the 1960s a lot of research has been done about it. It is mainly caused by factory smog and car fumes. At every moment these chemicals are released into the air. There, they mix with water and are stored in clouds until it rains. Recently, many famous buildings and statues are being damaged by acid rain and in the future scientists predict that huge areas of forestland will be destroyed by acid rain. Acid rain can be reduced if we burn fewer fossil fuels, but we need to act now!
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