Bài 2: Viết lại câu sao cho nghĩa không đổi sử dụng từ gợi ý cho sẵn.
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 ………………………………………………………………………………….