Combine these sentences using relative pronouns: who, whom, which, that, whose

Combine these sentences using relative pronouns: who, whom, which, that, whose
1.The man is a writer.We met him at the theatre yesterday.
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2. Alice doesn't watch flims. Her best friend is an actor.
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3. The kittens cried pathetically. Their mother was dead.
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4. I can see a girl and her dog. They are running in the park.
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5. He asked about the factories and workers. He had visited them.
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