exercises online

http://www.xtec.es/~ncastill/2n%20ESO/likes_dislikes.htm

http://www.isabelperez.com/happy/tenses/exercises/present_1.htm

http://www.ego4u.com/en/cram-up/grammar/simple-present/form/exercises?02

http://www.ego4u.com/en/cram-up/grammar/simpre-prepro

http://speakspeak.com/a/html/d3a001_grammar_beginners_present_simple_continuous.htm

http://www.eslgold.com/grammar/intensifiers.html

http://www.englishpage.com/minitutorials/sosuch.html