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1. If you don’t …………………away, I will send for the police.
2. If you don’t …………………a visa, you can’t visit the United State.
3. If you don’t …………………hard, you will fail in your examination.
4. If you don’t …………………the umbrella with you, you may get wet.
5. If you don’t …………………to miss the bus, you have to come early.
6. If you don’t …………………the receipt, the shop might not give you a refund.
7. If you don’t …………………the lessons carefully, you can not do the test well.
8. If you don’t …………………your English regularly, you won’t get any better.
9. If you don’t …………………all of my questions, I can’t do anything to help you.
10. If you don’t …………………your windows cleaned soon, you won’t be able to see out
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