Complete the sentences with the past tense (p.simple, p.continous, p.perfect, p.perfect continous).

1. I heard a knock at the front door so I (go) to answer it.
2. The football season (begin) a month ago.
3. We entered the house quietly because everyone (sleep)
4. They (go) to the airport as the plane was landing.
5. She wore the shoes she (buy) the previous day.
6. I fell as I (run) for the bus.
7. When I was a student, I (not have) much money
8. Why ....... she still...... (work) at one o'clock in the morning.
9. While millions of young readers in many cultures (enjoy) her first Harry Potter book, J K Rowling (think) ideas for the next book in this incredibly popular series.