Dear pupils, I will post some useful links for you, in order to get more practice. Your winter test paper will have similar exercises. Good luck.
comparison of adjectives
http://usefulenglish.ru/miscellany/misc-exercise-one
http://www.englishexercises.org/makeagame/viewgame.asp?id=5673
http://www.englishexercises.org/makeagame/viewgame.asp?id=316
http://www.englisch-hilfen.de/en/exercises/adjectives_adverbs/adjectives_comparison_sentences.htm
collective nouns
http://teachro.publiccomputingservices.org/grammarpractice/nouns/cnounandverb.htm
https://www.noslangues-ourlanguages.gc.ca/quiz/jeux-quiz-svan-eng.php
plural of the nouns
http://www.myenglishpages.com/site_php_files/grammar-exercise-plural.php#.VItGUDGsWN0
http://www.englisch-hilfen.de/en/exercises/nouns_articles/plural3.htm
comparison of adjectives
http://usefulenglish.ru/miscellany/misc-exercise-one
http://www.englishexercises.org/makeagame/viewgame.asp?id=5673
http://www.englishexercises.org/makeagame/viewgame.asp?id=316
http://www.englisch-hilfen.de/en/exercises/adjectives_adverbs/adjectives_comparison_sentences.htm
collective nouns
http://teachro.publiccomputingservices.org/grammarpractice/nouns/cnounandverb.htm
https://www.noslangues-ourlanguages.gc.ca/quiz/jeux-quiz-svan-eng.php
plural of the nouns
http://www.myenglishpages.com/site_php_files/grammar-exercise-plural.php#.VItGUDGsWN0
http://www.englisch-hilfen.de/en/exercises/nouns_articles/plural3.htm