PRESENT SIMPLE

PRESENT SIMPLE VS PRESENT CONTINUOUS

http://www.englishexercises.org/makeagame/viewgame.asp?id=2332

http://www.englishexercises.org/makeagame/viewgame.asp?id=5316

http://www.englishexercises.org/makeagame/viewgame.asp?id=5869

http://www.englishexercises.org/makeagame/viewgame.asp?id=1438

http://www.perfect-english-grammar.com/present-simple-present-continuous-1.html

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

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