Combine the following sentences, using preposition + whom/which.
1. Is this the book? You asked me for it.
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2. I don't find the person a very suitable companion. I'm sharing a flat with him.
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3. Here's the address. You should write to this address.
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4. I can assure you that David is a man. You can absolutely depend on him.
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5. I can't remember the name of the person. I gave the money to him.
à ………
6. This is a job. You can take your time over it, because I'm not in any particular hurry.
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7. The teacher said that two of the pupils had suddenly disappeared. He was responsible for them.
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8. Some foreign businessmen thought that British exports should increase after devaluation. I spoke to these three businessmen recently.
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9. They came to a plateau. Around the plateau stood a circle of high mountains.
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10. The scientist produced a working model. Reliable tests could be conducted on this model.
à ………