You a doctor as soon as you this irritating headache. 1_had to visit / feel
2_should have visited / felt
3_ might visit / felt
4_ought to have visited / would feel
5_Could visit / feel​

In free the children why does the author provide a first-hand account of visiting a brick kiln? to emphasize how factory conditions have improvedto show a group of people wno iqbal escapeto emphasize the homic conditions of debt slaveryto show the place where iqbal was forced to work