1 Задание

1 ) may

2) can't

3) may

4) can't

5) must

6) can't

2 Задание

1 ) They must see an optic illusion

2) He may be to the photo exhibition

3) This painting can't be that expensive!

4) My parents must have gone to the art exhibition

5) This painting can't be that old!

6)  We may be participating in this competition.