1. Wasn't it a great sight?
2. Can anyone tolerate this?
3. Who salutes the setting sun?
4. Couldn't Gulliver hear his watch ticking in his pocket?
5. Isn't it useless to cry over spilt milk?
6. Isn't the beauty of nature beyond description?
7. Who hasn't heard of Darwin?
8. Doesn't he have his dinner at sever every evening?
9. Didn't I tell him to practise regularly?
10. Doesn't virtue have its own reward?