present perfect continuous​

Ответ:

2 He has been swimming in the pool since 12 a.m.

3 She has been working since 9 a.m.

4 We have been using our mixer since 2001

5 He has been telling jokes since 6 o'clock

6 They have been playing a computer game since 4 p.m.

7 I have been drawing a picture since the morning