Упр. 172. Раскройте скобки, употребляя гла-| голы в Present Simple или Future Simple. (Все предложения относятся к будущему).
1. When he (to return) to St. Petersburg, he (to call) on us. 2. If I (to see) him, I (to tell) him about their letter. 3. We (to gather) at our place when my brother (to come) back from Africa. 4. I (to sing) this song with you if you (to tell) me the words. 5. I hope you (to join) us when we (to gath¬er) in our country house the next time. 6. What you (to do) when you (to come) home? 7. If I (to stay) some more days in your town, I (to call) on you and we (to have) a good talk. 8. He (to go) to the Public Library very often when he (to be) a student. 9. As soon as I (to return) from school, I (to ring) you up. 10. You (to pass) many towns and villages on your way before you (to arrive) in Mos¬cow. 11.1 (to stay) at home till she (to come). Then we (to go) to the theatre if she (to bring) tickets. 12. After I (to finish) school, I (to enter) the Uni¬versity.