II. Rewrite these sentences
1. David had gone home before we arrived.
-> After David had gone home, we arrived.
2. We had lunch then we took a look around the shops.
-> Before we took a look around the shops, we had had lunch.
3. The light had gone out before we got out of the office.
-> When we got out of the office, the flight had gone out.
4. After she had explained everything clearly, we started our work.
-> By the time we started our work, she had explain everything clearly.
5. My father had watered all the plants in the garden by the time my mother came home.
-> Before my mother came home, my father had watered all the plants in the garden.