1. употребите глагол-сказуемое в правильной форме it is known that an alcoholic's life (to shorten) on the average by ten twelve years. alcohol (to cause) heart disease and finally brain damage. when the effect of a drink (to be) over an alcoholic (to get) nervous and aggressive until he (to drink) again. he often (to fail) to recognize the problem: "i can (to stop) any time i want to," is the typical reaction. by the time he (to realize) he has got a drinking problem he (to reach) the point of no return.