Nauka i technika - rozdz. 9 repetytorium

For more information, c (a)   on the link.

If you forget your password, you have to r (a)   it.

Copernicus p (a)   that the Earth goes around the Sun.

You should switch o (a)   your mobile when you have a lesson.

The telephone was i (a)   by Alexander Graham Bell in 1897.

When a liquid freezes, it becomes s (a)   .

Maria Skłodowska - Curie received Nobel P (a)   in chemistry.

O (a)   is a gas necessary for animals and plants to live.

Every day scientists c (a)   out experiments in their labs.

F (a)   the instructions carefully, please.