Question

... Jane (to be) in the office?- Yes she (to type) some documents since 9 o'clock.Скобки нужно разкрыть в Present Simple, Continuous, Perfect и Perfect Continuous.Дам балл​

Answer 1

Ответ:

Is Jane in the office?  (Present Simple)

Yes, she has been typing some documents since 9 o'clock. (Perfect Continuous)

Answer 2

1. Is

2. has been typing

Answer 3

... Jane is (to be) in the office? - Yes, she has been typing (to type) some documents since 9 o'clock.