Перепишите следующие предложения; подчеркните в каждом из них модальный глагол или его эквиваленты. переведите предложения на язык. we can think of heat as a special form of kinetic energy. a computer should solve complicated problems many millions of times faster than a mathematician. new types of plastics had to be obtained for space technology. to measure the vast distances between different planets scientists have to use special instruments.