Complete the sentences with the present perfect continuous.
1 nbsp;nbsp;nbsp;You look

Complete the sentences with the present perfect continuous.
1 nbsp;nbsp;nbsp;You look tired.... (you/work)
in the garden all afternoon?
2 nbsp;nbsp;We nbsp;... nbsp;(use) solar power for
ten years now.
3 nbsp;nbsp;nbsp;The children .... (play) on the
computer for a long time. Tell them to stop.
4 nbsp;nbsp;A lot of animals nbsp;nbsp;.... nbsp;nbsp;nbsp;(lose)
their natural habitats recently.