Ex 5. Viết lại câu với “” if/unless” sao cho nghĩa của câukhông thay đổi.

1. If you don’t do more exercises, you can’t understand the lesson.

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2. I can go out with you if I don’t have much homework .

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3. Hoa can go out with me if she doesn’t have much homework .

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4. You will run out of money if you don’t stop wasting it.

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5. Don’t call me unless it is an emergency.

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