2.I've got backache(B)
3.I've got flu.
4.I've got toothache
5.I've got earache.
6.I've got a cold.(D)
7.I've got a headache.
8.I've got a pain in my leg, arm, chest etc.
9.I've got a sore throat.(E)
BUT 10. I feel sick. I've eaten something bad.(F)
Or I feel terrible!
11. Or I don't know what's wrong with me!!!!!(G)
Answers:1. (E) 2.(D) 4.(B) 7.(A) 9.could be (F) 10. (E) or (F) 11.(G) or (C)!
See The A - Z of English Grammar & Usage for the rules.