1) Climate change __________ by human activities. a) caused b) is caused c) are caused 2) Kangaroos ………… for their meat and fur. a) hunted b) are hunting c) are hunted 3) In some countries, the nests of rare birds ………. by law. a) protected b) are protected c) protects 4) Throughout history elephants ………… for their tusks. a) have been hunted b) have been hunting c) are hunt 5) Many salad crops ………. by farmers in the area around the city. a) are producing b) are produce c) are produced 6) Petrol, oil and coal __________ fossil fuels. a) are call b) are called c) called 7) An increase in floods, hurricanes and drought __________ by climate change. a) have cause b) is cause c) have been caused 8) The international agreement on climate change _________ the Kyoto protocol. a) is called b) called c) had been called

Passive voice - Environment

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