Choose the best option (A, B, c or D) to complete these sentences.

If we ................... waste paper, we will save a lot of trees.

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My mother often ______ the housework every day.

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John ................... in a house in the countryside.

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He likes to meet and spend time with other people. He is very ______.

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We might ………….. smart phones surfed the Internet.

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_____are foods and other goods sold at a shop or a supermarket.

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Robot will help us do the housework such as cleaning the floor, ..........meals and soon.

Choose the best answer to complete the sentence.

He ______ books at the moment.