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14. There are no appointments _______ at the dentist's this afternoon. You will have to wait until tomorrow.
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15. My grandmother has got a new computer and now she spends her day visiting social ____.
16. I don't go to the ______ very often as it has become very expensive.
17. My friends love to ______ with his friends and talk. They are not very active people.
18. Football is purely a ______ sport for millions of people all around the world.
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