Задание 4. Образуйте сравнительную и превосходную степени прилагательных. interesting, long, much, impossible, clever,

4. interesting - more interesting - the most interesting,

long - longer - the longest,

much - more - (the) most,

impossible - more impossible - the most impossible,

clever - cleverer - the cleverest (2 способ: clever - more clever - the most clever)

few - fewer - the fewest. 

5. Unfortunately, usually, only, there, always, more, rarely, probably