Answer:
1. It was a great sight.
Ans: Wasn’t it a great sight?
2. No one can tolerate this.
Ans: Who can tolerate this?
3. Nobody salutes the setting sun.
Ans: Who salutes the setting sun?
4. Gulliver could hear his watch ticking in his pocket.
Ans: Couldn’t Gulliver hear his watch ticking in his pocket?
5. It is useless to cry over spilt milk.
Ans: Isn’t it useless to cry over spilt milk?
6. The beauty of nature beyond description.
Ans: Doesn’t the beauty of nature beyond description?
7. Everybody has heard of Darwin.
Ans: Who hasn’t heard of Darwin?
8. He has his dinner at seven every evening.
Ans: Hasn’t he has his dinner at seven evenings?
9. I told him to practise regularly.
Ans: Didn’t I tell him to practise regularly?
10. Virtue has its own reward.
Ans: Hasn’t virtue its own reward?