It is ________ (legal) to drive after drinking alcohol. 2 . The injured man was ________ (capable) of walking , so he had to be carried. 3 . It is ________ (reasonable)to stick to this absurd proposal. 4 . Therefore , when they become older they are (able) to do any other kind of work. 5 . There exists the ________ (balance) between the rich and poor countries.