4. Finish the following sentences.
1. They were rebuilding their house. Their house ………………
2. They have broken the window. The window ………………
3. Somebody has bought all the ingredients. All the ingredients …………
4. Nobody ate the food. The food ………………
5. A robot drives this airplane. This airplane ……………… by a robot.

1 .Their house was being rebuild. 2.The window have been broken. 3.All the ingredients has been bought. 4.The food was ate.5.This airplane is driven.