Ответ:

1. He is watching TV

2. I am being a fireman

3. Tom is taking photos

4. Tom and Nick are playing chess

5. The teachers are having party

6. The sportsmen is taking a taxi

7. The policeman is asking him the question

8.

9. Kate and Ann's gransmother are making a cake

10. The writer is writing the book

Ответ:

1.  is watching

2. am being

3.is taking

4. are playing

5. are having

6. is taking  в данном случае sportsman в единственном числе

7.are asking в данном случае policemen во множественном

8. are visiting

9. are making

10. is writing

Объяснение:

Структура длительного настоящего времени образуется сочетанием вспомогательного глагола to be и смыслового глагола с окончанием -ing. В образовании времени участвуют формы глагола to be настоящего времени - am/ is/ are в зависимости от подлежащего.