Let’s take a poll, who uses the Oxford comma?

I thought he is fast because he was running?

I get

The answer to 27 he says is D (according to some “Merriam Webster” dictionary)

Is it than or then?

Silent Letters

shouldn’t number 4 include “their” (my professor said that while you can add it it’s superfluous)

and number 5 be “ tomorrow’s “ test? (he said that adding “ ‘s “ is completely wrong

if i’m wrong can someone explain why?

for context i live in italy

Context: It''s League of Legends sub and OP is commenting about someone else playing character called Cassiopeia

I know that the singular "they" is used to refer to one person without using "he" or "she".

According to this article:

They always goes with a plural verb, even when they is referring to a single person: “They are my friend.”

But how do the majority of people talk in real life? Does the plural or singular in this case depend on the dialect/region?

I usually pass C1 tests but this A2 test question got me curious. I got "BC that's how it is"when I asked my teacher.

Something just bothers me about the first 3 rows.