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1. If yesterday (be) Sunday, the banks would all have been closed. 2. If you (warn) me, I would have waited for you. 3. If he (take) a taxi, he wouldn't have missed the train. 4. If you (go) with us to the Bolshoi theatre, you would have spent a wonderful time ! 5. If I (know) about it yesterday, I could have come to help you. 6. If they (leave) the town on Monday, they would have reached the mountains on Thursday. 7. If he (study) hard, he would have passed his examination. 8. If she (know) you were coming she would have met you at the airport. 9. If the weather (be) warm last weekend we would have gone fishing. 10. If we (have) some news from Helen, we would have got in touch with you.