Упр. 172. Раскройте скобки, употребляя гла- голы в Present Simple или

Упр. 172. Раскройте скобки, употребляя гла- голы в Present Simple либо 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 gather) 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,