Put the verbs in brackets into the correct tense form and voice.
1)- _____ they_____ still ( to work) in the garden?
_ No, the work ________ ( to finish) already.
2)-______ the tickets ________ ( to book) yet?
-Yes they ___________ ( to deliver ) in an hour.
3) - When ________ this zoo _______ ( to found ) ?
- It _______ ( to found ) fifty years ago.

1)- __Are___ they_____ still  working) in the garden? _ No, the work __has been finished) already. 2)-____Have__ the tickets __been____booked) yet? -Yes they ___will be________ (delivered ) in an hour. 3) - When ___was_____ this zoo __ founded ) ? - It __was founded ) fifty years ago.