ghi đối nghĩa với mệnh đề if
1. They aren't. They don't wear unifrom
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2. He isn't careful. He doesn't get good marks
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3. I don't understand you. You speak very quickly
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4. He is absent now. He doesn't know what to do
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5. It is rainy now, so we can't finish our work
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6. We can't buy this car because it is very expensive
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7. The house is so large that they can't paint it in a week
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8. He is too young to go to school
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9. I want to met Alice but I don't have her address
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10. I can't do this test because it is very difficult
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11. We can't go to the cinema because it rains heavily
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12. These exercises are easy enough for me to do in 15 minutes
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13. I don't study hard anh I can't pass the final exam
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14. This shirt is too small for me to wear