Past perfect

GRAMMAR
http://www.englisch-hilfen.de/en/grammar/past_perfect.htm

http://www.ego4u.com/en/cram-up/grammar/past-perfect-simple

QUE ES EL COMENIUS?
http://iesguillembergueda.xtec.es/pn/

UNIT 3

REGULAR AND IRREGULAR VERBS
Practice with these verbs
Exercise 0
Exercise 1
Exercise 2

PRESENT PERFECT
Exercise 3
Exericise 4

PRESENT PERFECT AND PAST SIMPLE
Exercise 5