Выберите нужную форму глагола to be и переведите предложения на русский язык. 1.The life and scientific career of Lobachevsky ( is, was, will be) closely connected with Kasan. 2.There ( are, were, will be) only two kinds of energy transfer- wave motion and particle motion. 3.The Celsius scale ( is, was, will be) the scale used in most scientific experiments.