3. The zookeeper would have punished her with a fine if she ( feed) ______ the animals.. 4. If you pass your examination, we (have) _________________a celebration. 5. Lisa would find the milk if she (look) _________________ for it in the fridge. 6. What (happen) _________________if I press this button? 7. The door will be unlocked if you (press)_________________ the green button. 8. I should have voted for her if I (have) _________________ a vote then. 9. If you go to Paris, where you (stay) _________________? 10. If you (swim) _________________ in this lake, you'll shiver from cold. 11. If someone offered to buy you one of those rings, which you (choose) _________________? 12. The flight may be cancelled if the fog (get) _________________thick. 13. If the milkman (come) _________________, tell him to leave two pints. 14. I (call) _________________ the office if I were you. 15. Someone (sit) _________________on your glasses if you leave them there. 16. You would hear my explanation if you (not talk) _________________so much. 17. What I (do) _________________if I hear the burglar alarm? 18. If you (read) _________________the instructions carefully, you wouldn't have answered the wrong question.