Make questions for these underlined parts of the sentences below.
1. My telephone number is 3 734 850.
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2. They have prepared for the party for 3 hours.
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3. Yes, I called him an hour ago.
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4. He often visits his grandparents in the summer.
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5. They prepared for the party 3 hours ago.
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6. No, 3745 869 isn’t Phong’s telephone number.
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7. They are playing football in the school stadium.
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8. She arrived at school at 7 o’clock.
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9. No, he hasn’t had lunch yet.
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10. Jane has just written a letter.
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