I. Make questions for the following sentences based on the underlined words.
1. She is unhappy because her grades in Maths are so bad.
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2. My sister looked tired because she had too many exercises to do.
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3. We mustn't let the children play in the kichen because it is sometimes a dangerous place.
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4. She didn't feel well because she ate too much meat.
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5. I can't buy those books because I don't have enough money.
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6. They were wet because it rained heavily.
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7. My sister stayed at home yesterday because she felt sick.
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8. I did not travel by train because the weather was so bad.
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9. The man had to leave the office immediately because he did not feel well.
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10. They wear warm clothes because it is cold.
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