- http://activiscope.com/flash_new.php?activity=catchoice&id=21435
- http://learningapps.org/419832
- http://www.agendaweb.org/verbs/tobe-pronouns/index.html
- http://www.agendaweb.org/verbs/tobe/
- http://www.agendaweb.org/exercises/verbs/to-be-forms
- http://www.agendaweb.org/exercises/verbs/tobe-present.htm
- http://www.bradleys-english-school.com/online/MultipleChoice/verbtobe.html
- http://www.agendaweb.org/verbs/tobe-present/index.html
- http://www.englishmaven.org/HP6/To_Be_Exercise1.htm
- http://www.eflnet.com/grammar/tobepresent.php
a/an
- http://www.agendaweb.org/exercises/grammar/a-an/index
- http://www.englishexercises.org/makeagame/viewgame.asp?id=1654
- http://www.englishexercises.org/makeagame/viewgame.asp?id=1971
- http://www.my-english.edu.pl/index.php?id=14
plural
- http://www.hseidensticker.de/unit0/plural1.htm
- http://a4esl.org/q/f/z/zz61fck.htm
- http://www.englishexercises.org/makeagame/viewgame.asp?id=2570
- http://www.roythezebra.com/reading-games/singular-or-plural-1.html
- http://www.roythezebra.com/reading-games/singular-or-plural-2.html
- http://activiscope.com/flash_new.php?activity=topoftheclass&id=21441
- http://www.usingenglish.com/quizzes/288.html
pronouns
- http://www.agendaweb.org/exercises/grammar/pronouns/personal-1
- http://www.agendaweb.org/exercises/grammar/pronouns/personal-2
- http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-5556.php
- http://www.englishexercises.org/makeagame/viewgame.asp?id=1688
- http://www.englishexercises.org/makeagame/viewgame.asp?id=1014
- http://www.englishexercises.org/makeagame/viewgame.asp?id=2321
questions
- http://www.eflclub.com/1quizzes/hello/hello.htm
- http://www.bradleys-english-school.com/online/MultipleChoice/whquestion.html
- http://www.aula21.net/segunda/juandiaz/ejercicio8.htm
- http://www2.arnes.si/~oskplucija4/ces/usfulphrases.htm
- http://www2.arnes.si/~oskplucija4/ces/quandan.htm
- http://www.montsemorales.com/gramatica/QuestionwordsImag3-18.htm
- http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-4438.php
- http://enjoyenglish.free.fr/english/primaire/concentration/qanda1/qanda.htm
