Put the verbs in brackets into the correct past tense. 1)

Put the verbs in brackets into the correct past tense. 1) Yuri ..... (work) on his computer for two hours before it .... (break down). 2) I ..... (mop) the floor while my brother was cutting the grass. 3) ..... (you/sleep) when the earthquake ..... (start)? 4) This time last week, I ..... (fly) to Paris. 5) Sam was really happy because he ..... (pass) all his exams. 6) Sarah ..... (clean) the house by the time her barents ..... (come) back. 7) James ..... (wait) for a while and then ..... (open) the door to see who ..... (make) that strange noise. 8) Marion ..... (not/go) shopping because she ..... (spend) the morning with her little brother that day.