This is a C2 Proficiency practice exam for Part 4: Key Word Transformation. The summary below keeps the exercise understandable, linkable, and accessible outside the interactive runner.
The thing I'd like most would be to visit the art gallery again.
[more]
There's _______ the art gallery again.
When I shouted at the boys to stop throwing stones they completely ignored me.
[took]
The boys _______ when I shouted at them to stop throwing stones.
What the lecturer said was not very clear at times.
[lack]
There _______ in what the lecturer said at times.
It was only when it got dark that Paolo decided to make his way back home.
[fell]
It was not _______ that Paolo decided to make his way back home.
The company avoids employing unqualified staff unless there is no alternative.
[resort]
Only _______ employ unqualified staff.
The careful preparation for the event ensured it was a memorable day for everyone who attended.
[which]
The care _______ event ensured it was a memorable day for everyone.