Test your knowledge on Conditional Sentences. Put the verbs in brackets into correct tenses (zero / first / second conditionals) 1. If water ……………… (boil), it ……………. (change) into steam. 2. She ……………. (call) you if she ………….. (have) time. 3. If you …………….. (drive) more carefully, you ………………. (have not) so many accidents. 4. Water ……………… (freeze) if the temperature ………… (fall) below zero. 5. If the class ……………. (be) full, we ……………. (find) another one. 6. If we ……………… (continue) to pollute our planet, future generations ……………….. (suffer). 7. If you ……………….. (go) by train, you ………………. (get) there earlier. 8. If she ………………… (stay) with us for three days, we …………… (have) enough time to see a few sights. 9. If I ………………………… (be) in Jane’s position, I …………………………. (not do) that. 10. If you ……………. (live) on the planet Mercury, you ………….. (have) four birthdays in a single Earth year. 11. If the doorbell ……………. (ring), the dog ……………… (bark). 12. If my legs ……………… (be) longer, I ……………….. (be) a much faster runner! 13. If my neighbour …………….. (become) prime minister, he …………….. (give) everyone a million euros. 14. If I ………….. (speak) Arabic, I ……………….. (go) and work in Egypt. 15. It …………… (be) nice if you …………. (help) me a bit with the housework.