№1
1. if we go to London, we will see Big Ben.
2. we will make sandwich, if we buy bread.
3. if it rains, i will take an umbrella.
№2
1) tall – taller – the tallest;
2) beautiful – more beautiful – most beautiful.
1. If we go to London, we will see Big Ben.
2. We will make sandwich, if we buy bread.
3. If it rains, I will take an umbrella.
Сравнительная степень: taller, more beautiful
Превосходная степень: the tallest, the most beautiful