Сколько разрезов надо сделать, чтобы проволоку длиной 20 м разделить на части по 2 м?

1)   I … (to be) 25 years old.

2)   What … (to be) your name? You … (to be) not English.

3)   The sea … (to cover) two thirds of the world.

4)   I always … (to sleep) eight hours every night.

5)   Gustavo Eiffel … (to build) the Eiffel Tower.

6)   I … (to go) to the cinema last night but I … (not/to enjoy) the film.

7) Perhaps I … (to see) you tomorrow.