1. I stopped them from doing it.(gerund)
I'm sure of having read this book.(gerund)
I learned to swim.(infinitive)
2. don't have to, shouldn't
1-are 2-a,on,in 3-is,a,a 4-on 5-in 6-up in 7-is
The capital of Oz - emerald city
В первом ам а во втором ис
This year she is ten. Next year she'll be eleven.
This year she is eight. Next year she'll be nine.
This year she is seven. Next year she'll be eight.