Rewrite the sentences

1. David had gone home before we arrived.

g After............................................................................................................................................

2. We had lunch then we took a look around the shops.

g Before .........................................................................................................................................

3. The light had gone out before we got out of the office.

g When ...........................................................................................................................................

4. After she had explained everything dearly, we started our work.

g By the time .................................................................................................................................

5. My father had watered all the plants in the garden by the time my mother came home.

g Before .........................................................................................................................................