кому не сложно поставлю идеальный

Сначала текст без опечаток:

The prehistoric monument of Stonehenge is near Salisbury in the south of England. Stone Age people started to bulid the stone circle in 3100 BC, and they used it for religious ceremonies. The enormous stones were originally from Wales, and people carried them 400 km. How? Nobody knows. There weren't any vehicles in those days - perhaps people carried them down the river on boats!

Перевод:

Доисторический памятник Стоунхендж находится недалеко от Солсбери на юге Англии. Люди каменного века начали строить этот круг из камней в 3100 году до нашей эры и использовали его для религиозных церемоний. Огромные камни были из Уэльса, и люди перенесли их на 400 км. Как? Никто не знает. В те дни не было никаких транспортных средств - возможно, их перевезли по реке на лодках!

1. If I stay some more days in your town, I will call you and we will have a good talk. 2. He will go to the Public Library very often when he is a student. 3. As soon as I return from school, I will ring you up. 4. You will pass many towns and villages on your way before you arrive in Moscow. 5. I will stay at home till she comes. Then we will go to the theatre if she brings tickets. 6. After I finish school, I will enter the University. 7. When he returns to St. Petersburg, he will call on us. 8. If I see him, I will tell him about their letter. 9. We will gather at our place when my brother comes back from Africa. 10. I will sing this song with you if you tell me the words. 11. I hope you will join us when we gather in our country house the next time. 12. What will you do when you come home? 13. When they cross the road, they will see the hotel. 14. Before she gets to the theatre, she will go past the shopping centre. 15. What will we do if it rains(is raining) tonight? 16. What will she do if she sees her best friend again? 17. If the bus is very crowded, you will be exhausted by the time you get to work. 18. If it is very cold tonight, our car will not  start in the morning.