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 …………………………………………………………………………….
Loga
Sinh Học lớp 12
