Поставьте глагол в правильную форму (presents simple или past simple), (active или passive):
1) Water can (separate) from the dissolved substances by distillation.
2) Chemistry’s origin (go back) to ancient times.
3) The first instrument for measuring temperatures (invent) by Celsius.
4) Water (boil) at the temperature of 100°C.
5) My friend (admit) to the University last year.
6) My friend often (receive) letters from his grandparents.

Maguire    3   05.04.2020 18:39    4