FORM 8. PAST PERFECT

 For practicing:

1. https://agendaweb.org/exercises/verbs/past-perfect/write-1.htm;

2. https://www.englisch-hilfen.de/en/exercises/tenses/past_perfect_simple_past.htm;

3. https://www.englisch-hilfen.de/en/exercises/tenses/past_perfect_mix.htm;

4. https://www.englisch-hilfen.de/en/exercises/tenses/past_perfect_negation.htm;

5. https://www.englisch-hilfen.de/en/exercises/tenses/past_perfect.htm;

6. https://www.englisch-hilfen.de/en/exercises/tenses/past_perfect_questions.htm;

7. https://www.engblocks.com/grammar/exercises/tenses/past-perfect-mixed/;

8. https://www.english-4u.de/en/tenses-exercises/past-simple-past-perfect.htm;

9. https://learnenglish.britishcouncil.org/free-resources/grammar/english-grammar-reference/past-perfect.