Rewrite the sentences using active or passive causatives.

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
1. A robot cleans my house every day.
I have .
I have (by a robot).
2. My dad arranged for someone to repair our robot vacuum cleaner.
My dad had .
My dad had .
3. The shop arranged for a robot to put together our furniture in 10 minutes.
We had .
We had .
4. They will upgrade his computer to improve its performance.
They will have .
They will have .