Past continuous and past perfect

Here are some mixed exercises with past continuous and past perfect in addition to the tenses we had seen earlier:

http://www.englishpage.com/verbpage/verbs3.htm

http://www.englishpage.com/verbpage/verbs4.htm

http://www.englishpage.com/verbpage/verbs11.htm

http://www.englishpage.com/verbpage/verbs12.htm