Here’s a fun grammar quiz from the BBC.
I got one question wrong. I wonder if other Glossophiles are puzzled by the same question, which I think has two correct answers and not just one (see below for the question in question, and I promise not to spoil it).
…
…
Question 9: I think the answer might depend on whether you’re British or American, or on which dictionary you prefer for reference …
***
That one I got right – it was No. 4 that tripped me up.
I got them all right, but I thought that both answers to #3 could be correct (“The brandy butter, which was on fire, burnt Rudolph,” vs. “The brandy butter that was on fire burnt Rudolph”). The former describes a singular brandy butter, but the latter could be discerning between multiple brandy butters, all but one of which are not on fire.