Language, brain and disability

It has often been remarked that we come to appreciate_____unique complexity and function of language only when it starts to go wrong. This happens daily in many small ways - when we detect ambiguity, express ourselves incoherently, or speak at cross-purposes. Less commonly, it happens in_____ dramatic and devastating manner, in _____form of language disability. Those who find it difficult or impossible to communicate, on account of some physical, psychological, or other disability, face_____ frustrating, isolated, and uncertain future, in which their disability is often not recognized, and community support services may be inaccessible or absent. Drawing attention to ______ existence and extent of language disability is thus _____important role for any encyclopedia of language.

(Adapted from: The Cambridge Encyclopedia of language)