1.major operation
2.cancer
3.back-ache
4.stomach-ulcer
5.knee-cap
6.accident
7.appendix
8.appetite

1.major operation ---When did you do that major operation?
---How about that major operation ?
2.cancer ---Don't always doubt about cancer?
---We'll get over cancer before long.
3.back-ache ---Do you feel back-ache?
---You have to pay attention to
your back-ache.
4.stomach-ulcer ---He has got serious stomach-ulcer?
---Stomach-ulcer is troublesome.
5.knee-cap ---His left knee-cap has been
broken.
---Something is wrong with his
knee-caps.
6.accident ---Have you heard of that accident?
---That accident is on purpose?
7.appendix ---Have you read that appendix?
---You should have read that appendix.
8.appetite ---Your appetite is great.
---I dear not think of his appetite.