Переведите предложения, обращая внимание на сказуемое:
а) с модальным глаголом:
a. due to the energy of the atom man can produce electric energy at atomic power stations.
b. the planet pluto is so far away that we cannot study it easily.
c. he could not complete his research in time as he worked very slowly.
б) с эквивалентом модального глагола:
a. you needn't take all these measurements. we already know the volume of gas in this tube.
b. he had to work hard before he was able to complete his research.
c. you will have to show the equation to your teacher.
d. as the student was late he was not allowed to enter me classroom.

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