Word formation: irregular forms

The holiday rep explained the history of the local area to us in _________________

I demanded an _____________ from the hotel manager as to why our room hadn't been cleaned.

There was such a wide ___________ of interesting local dishes that I really didn't know what to choose.

I wasn't sure we'd made the right ___________ when the rep told us that we were visiting a volcano the next day.

I don't think I'd be very good on an adventure holiday because I'm quite scared of ____________.

It was very interesting to be in a country that has such different religious ____________.