Задание

Read these sentences and choose the correct answer to fill in the gaps.

1. I _______ speak Swedish, but maybe I'll learn it someday.

can't

could

couldn't

can

2.  In 1800, nobody ________ travel into space.

couldn't

can

can't

could

3.  They _________ go to the movies. They have other things to do tonight.

couldn't

can't

could

can