汉语 should be used
What to do? Just learn Esperanto!
Esperanto = 世界语
Literary "a world language" !
I think "他們不會說英語，我們不會說中文，怎麼辦？" should be accepted.
"[They/We] do not speak [English/Chinese]." imply inability to speak, so "不會說" variants should be allowed.
I learned it like this as well. 不說feels weird to me
And we are saying this in perfect Chinese. ^^
I used 讲 like 他们不讲英文。Should that be allowed too?
Yes, 讲 (jiǎng) is also common, and should be accepted.
why is "汉语 “ wrong here?