N1
1) project -d) a long piece of school work
2)grade - c) American word meaning "a school year", final exam result
3) subject - e) you study it at school, e.g. Science ,History.
4) uniform - a)special school clothes
5) mad - b)American word meaning "angry"
N2
comparative:
1)hot - hotter
2)difficult - more difficult
3)bad - worse
4)good - better
5)heavy - heavier
superlative:
1)hot - hottest
2)difficult - most difficult
3)bad - worst
4)good - best
5)heavy - heaviest