And now make sentences.
• Ice melting / fresh water / supplies.
• Nuclear power stations / weapons / testing / wrong use.
• Damage / toxic wastes / air and water / trees and plants.
• Clean air / to breathe / stay in atmosphere / exhaust fumes.
• Skin cancer / ultra violet rays / no protection.

High- higher - the highest,
long - longer - the longest
comfortable - more comfortable - the most comfortable
terrible -more terrible - the most terrible
young - younger - the youngest
difficult - more difficult - the most difficult
short - shorter - the shortest
far - farther, further - the farthest, furthest
clean - cleaner - the cleanest
big - bigger - the biggest
important - more important - the most important
bad - worse - the worst
old - older - the oldest
light - lighter - the lightest
good - better - the best
little - less - the least
fine - finer, the finest
early - earlier - the earliest
poor - poorer - the poorest
many - more - the most
busy - busier - the busiest

Yesterday my friends and I went to the theatre for the new show. It lasted 2 hours. It was very interesting, and it was playing the most famous actors of theatre and cinema from all over the world. Me and my girlfriend Laura after this performance I came home and told the parents about our experiences, because it was our first trip to the theater! 

Вот перевод, если надо.
Вчера мы с друзьями ходили в театр на новый спектакль. Он длился 2 часа. Было очень интересно, там играли самые известные актеры театра и кино со всего мира. Мы с моей подругой Лаурой после этого спектакля приехали домой и еще долго рассказывали родителям о наших впечатлениях, ведь это был наш первый поход в театр!