Choose the letter A, B, C or D to complete the sentences

Question:Do you know what ___________ water pollution?

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Question:If students recycle and use recycled materials, they will save _________.

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Question:We ___________ a survey to know more about recycling.

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Question: If we continue to deforest, our earth ___________ polluted.

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Question:If you turn _________ the lights when you don’t use it, you will save electricity.

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Question: You should put rubbish in the recycling ___________.

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Question: We will save the environment if we ___________ plastic.

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Question: We can find noise pollution __________ most cities.