Dirt, можно ещё mud (слякоть)
They have just taken the bottles to the recycling plant.
Why did you decide ..?
I always wanted..
How long did the tour last?
Did you go alone?
Have your friend ever been on a Safari..?
Did you feel bored?
I had made a lot of friends.
Early - earlier - the earliest
splendid - more splendid - the most splendid
easy - easier - the easiest
efficient - more efficient - the most efficient
comprehensive - more comprehensive - the most comprehensive
thrifty - thriftier - the thriftiest
reasonable - more reasonable - the most reasonable
good - better - the best
expensive - more expensive - the most expensive