Fill in the gaps with either Past Perfect or Past Perfect Continuous. 1. We (listen) to the music for two hours before she came back. 2. My sister (travel) to Moscow before we were on the holiday. 3. Boys (walk) all day in the street so they were very happy tonight. 4. I got bad marks in English I (not/expect) it. 5. (she /start) making the dinner when the girls arrived? 6. Girls (dance) for an hour when their mother came in. 7. I (enjoy) this picture for an year before I bought it. 8. Mary (call out) for two years before they helped her.