IV. Выделите сказуемое, определите его видовременную форму и укажите инфинитив: 10. When I entered the office, the secretary was typing some letters. 11. What are you talking about? 12. Did you travel around Europe last year? 13. Don't come at 6, I shall be doing my homework. 14. Will you come to the party with me? 15. Every day my aunt bakes a cake for lunch. 16. Yesterday I came home late. 17. What were you doing yesterday all day? 18. I shan't play the piano tomorrow.

1. When I entered the office, the secretary was typing some letters.

Entered (to enter) - Past Simple.

Was typing (to type) - Past Continuous.

2. What are you talking about?

Are talking (to talk) - Present Continuous.

3. Did you travel around Europe last year?

Did travel (to travel) - Past Simple.

4. Don't come at 6, I shall be doing my homework.

Don't come (to come) - Present Simple.

Shall be doing (to do) - Future Continuous.

5. Will you come to the party with me?

Will come (to come) - Future Simple.

6. Every day my aunt bakes a cake for lunch.

Bakes (to bake) - Present Simple.

7. Yesterday I came home late.

Came (to come) - Past Simple.

8. What were you doing yesterday all day?

Were doing (to do) - Past Continuous.

9. I shan't play the piano tomorrow.

Shan't play (to play) - Future Simple.