III. Combine each pair of these sentences. Use "who",whom","whose" or "which":
1. The doctors were running to the emergency. I saw them.
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2. The people were nice. We visit their home
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3. Tehe River is not safe for swimming. It is polluted.
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4. This weekend, we're going to visit our old Prof. Trung. We love him very much.
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5. She is the woman. I am the same class with her daughter.
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6. The food is terrible. The children have to eat the food.
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7. Hawaii is a favorite vacation spot. It consisits of eight principal islands.
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8. We have a friend. His sister is a film star.
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9. The man is the clown. They talked to him after the performance.
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10. This film is very interesting. We saw it on TV last night.
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