COMPARATIVES AND SUPERLATIVES:

http://www.usingenglish.com/quizzes/45.html

http://learnenglish.britishcouncil.org/en/english-grammar/adjectives/comparative-and-superlative-adjectives

PRESENT SIMPLE OR CONTINUOUS

present simple: http://learnenglish.britishcouncil.org/en/english-grammar/verbs/present-tense/present-simple

present continuous; http://learnenglish.britishcouncil.org/en/english-grammar/verbs/present-tense/present-continuous

exercises:

http://www.englishpage.com/verbpage/verbs1.htm

http://www.englishpage.com/verbpage/verbs2.htm

http://www.englishgrammarsecrets.com/presentsimpleorcontinuous/menu.php

http://web2.uvcs.uvic.ca/elc/studyzone/330/grammar/simcon1.htm

http://www.usingenglish.com/quizzes/335.html

DON’T /DOESN’T: http://www.usingenglish.com/quizzes/335.html