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

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