Complete the second sentence in such a way that it means the same as the given one

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IV. Complete the second sentence in such a way that it means the same as the given one.

1. Study hard or you'll fail the exam.
⇒ If you don't __________

2. I don't see you very often because you live so far.
⇒ If you __________

3. I don't have enough money, so I'm not going to buy that skirt.
⇒ I'd __________

4. We don't practice English very often. We can't communicate with foreigners.
⇒ We __________

5. I can't meet you now. I have to work.
⇒ If __________