Exercise on Perfect Participle

Rewrite the sentences replacing the italic part with a perfect participle.

1. We switched off the lights before we went to bed.
   → we went to bed.
2. The boy asked his mother's permission and then went out to play.
   → the boy went out to play.
3. As he had drunk too much, he didn't drive home himself.
   → he didn't drive home himself.
4. We have written two tests today, so we are very exhausted.
   → we are very exhausted.
5. She filled the washing machine and switched it on.
   → she switched it on.
6. She had been to the disco the night before and overslept in the morning.
   → she overslept in the morning.
7. We had worked in the garden all day and were sunburned in the evening.
   → we were sunburned in the evening.
8. She had not slept for two days and therefore wasn't able to concentrate.
   → she wasn't able to concentrate.
9. Since I had not seen him for ages, I didn't recognize him.
   → I didn't recognize him.
10. I had not ridden a horse for a long time and found it very difficult to keep in the saddle.
    → I found it very difficult to keep in the saddle.