Review X / A

Past continuous (also called past progressive)

http://first-english.org/english_learning/english_tenses/past_progressive/02_past_progressive.htm
http://www.english-grammar-lessons.com/pastcontinuous/exercise2.swf
http://www.focus.olsztyn.pl/en-past-continuous-quiz.html

Imperative
http://www.englisch-hilfen.de/en/exercises/various/imperative2.htm

http://www.englisch-hilfen.de/en/exercises/various/imperative.htm
 http://learnenglishteens.britishcouncil.org/skills/listening-skills-practice/giving-directions
Very useful and complete: https://sites.google.com/a/leobaeck.net/avital-s-site/imperative-sentences

Past perfect
http://www.english-grammar-lessons.com/pastperfect/exercise3.swf
 http://www.learnenglish.de/games/tenses/pastperfecttest.html
http://www.esl-classroom.com/grammar/pastsperf1.html
http://www.englishgrammarsecrets.com/pastperfect/exercise3.swf

WHO/WHAT/WHEN/WHERE/WHICH/HOW/WHY/HOW MUCH/HOW MANY
http://www.montsemorales.com/gramatica/Questions&answers.htm
http://www.learnenglishfeelgood.com/esl-who-when-where-what1.html
http://www.englishexercises.org/makeagame/viewgame.asp?id=1794 
http://www.englishgrammarsecrets.com/pastsimple/exercise4.swf
http://www.english-4u.de/question_words_ex5.htm 
http://a4esl.org/q/f/z/zz87mca.htm

What time is it?
http://www.montsemorales.com/vocabulario/whattime1.htm
https://www.gamestolearnenglish.com/clock/
http://www.englishexercises.org/makeagame/viewgame.asp?id=1648