2.  Can – уметь, мочь  Should – должен  Must – обязан

3.  +I can do this task.  - I can’t do this task.  ? Can I do this task? - Yes, I can. - No, I can’t.

4.  +I should clean my room every day.  - I shouldn’t clean my room every day.  ? Should I clean my room every day? - Yes, I should. - No, I shouldn’t.

5.  +They must work hard.  -They mustn't work hard.  ?Must they work hard? - Yes, they must. - No, they mustn't.

6.  I …swim very well.  I …help the old people.  I …use a dictionary on my English lessons.  I …talk loudly on the lessons.  I …wash the dishes after the supper.

7.  I can help you, …?  I must close the door of my flat, …?  I should go to the gym, …?  I can play the violin, …?  He should invite you, …?

8.  Я умею кататься на коньках (skate).  Я обязан слушаться моих родителей.  Я умею играть в футбол.  Я должен делать свою домашнюю работу.