1. If Jack saw that sight, he could tell about it.
2. We wish they would come with us.
3. I have learnt English for two years.
4. Your English is better than mine.
5. If I had known her number, I would have rung her up.
6. The island was said to be discovered by accident.
7. If he had taken my advice, he wouldn't have gotten in trouble.
8. It took him two hours to write a letter.
9. I wish I could go to the party on Sunday.
10. Kangaroos, which come from Australia, have long tails.
- $Answered_{}$ $by_{}$ $thieukhue_{}$ -