Preveri, če ustrezno uporabljaš ‘for’ in ‘since’:
http://www.adelescorner.org/grammar/for_since/for-since1.html
http://www.englishexercises.net/yyforsince.html
Za dodatno utrjevanje in ‘ponotranjanje’ smiselne rabe obeh časov oziroma boljše razumevanje razlike med obema časoma: 😉
https://www.ego4u.com/en/cram-up/grammar/simpas-preper/tests?test1
https://www.ego4u.com/en/cram-up/grammar/simpas-preper/exercises
https://www.ego4u.com/en/cram-up/grammar/simpas-preper/exercises?ex02
in še več vaj:
http://www2.arnes.si/~osljjk6/anglescina/grammar/past_simple_present_perfect_s.htm