1. I have already watered them.
2. After she had been on holidays, she felt much better.
3. I will have finished my articles by the end of April.
4. Tomorrow I will have been here for a year.
5. After we had eaten the fish, we began to feel ill.
6. I had just sat down when Rebecca asked me to dance.
7. The farmer said he had fed the ducks and was going to feed the cows.
8. My father has mended my bike.
9. John has made chicken salad for lunch.
10. I'm sure Jane will have arrived in Boston by the end of the week.