1.1. David had gone home before we arrived.
→ After………………………………………………………………
1.2. We had lunch then we took a look around the shops.
→ Before…………………………………………..…………………..
1.3. The light had gone out before we got out of the office.
→ When…………………………………………..……………………
1.4. After she had explained everything clearly, we started our work.
→ By the time………………………………………….………………
1.5. He has never scored so high in a test as he did in this one.
→ This is…………………………………………………....…………
1.1. David had gone home before we arrived.
→ After…… David had gone home, we arrived.…………………………………………………………
1.2. We had lunch then we took a look around the shops.
→ Before……we took a look around the shops, we had had lunch……………………………………..…………………..
1.3. The light had gone out before we got out of the office.
→ When……we got out of the office, the flight had gone out.……………………………………..……………………
1.4. After she had explained everything clearly, we started our work.
→ By the time…… we started our work, she had explain everything clearly. …………………………………….………………
1.5. He has never scored so high in a test as he did in this one.
→ This is……the best……score he has received in a test.………………………………………....…………
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.