Use the Present or the Future Indefinite Tense. § 8.2.
Model : I (to help) you when I (to be) free. → I’ll help you when I am free.
1. It (to take) you ten minutes if you (to take) a taxi. 2. I (to know) something about London after I (to make) a trip there. 3. If you (to want) to see all these places, you must stay here for a week. 4. When you (to cross) the street in London, look first to the right because of the traffic rules. 5. As soon as you (to turn) the corner you (to see) the Russian Embassy right in front of you. 6. Let’s wait till the green light (to be) on. 7. When you (to get off) the bus, I (to be) there. 8. We (to meet) before he (to leave) for London. 9. I (to ask) a policeman in the street if I (to be) lost.