48965346 permutations of "I like coffee, chocolate, lemon, and Monday" and "I don't like bacon, pasta, and Friday" then out of nowhere, "South America"?
There seems to be a glitch in Duolingo's database in that it seems to be occasionally throwing questions from completely disconnected units, in this case 'countries', into other units.
What makes you think it's a glitch, though? It feels so helpful when it tries to trip me up with a semi-forgotten phrase and I manage to answer :> Just like in real situations!
I think the lesson itself is glitched. I have completed it about 17 times, the same set of sentences over and over, and it just will not "complete" to gold.
The lesson 'PresTens1 has a known issue for some people in that the strengthen exercise doesn't strengthen, the reported successful workaround is to just to the lesson again rather than the strengthen exercise.
The issue of the repeated list of questions seems to be a generic thing with Duolingo, people have reported a similar situation in other courses. Alternatives can be to do the 'timed exercise' (20 lingots - one payment only to activate it permanently) or to do the lessons on the app.