VII. Combine these pairs of sentences into single ones by using the connectors given in brackets two sentences.
1. Volunteering is special to many people. They can help others. (because)
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2. He tried hard. He couldn't set up a new world record. (although)
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3. They went for a picnic. We went grass sliding. (and)
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4. The TV set did not work properly. I turned it off. (so)
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5. Volunteer work is very hard for teenagers in the city. They enjoy doing it. (but)
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