The answer reverses the phrasing. This is intentional yeah?
I'm pretty sure "想" should also be allowed here in lieu of "要". Reported.
I don't think omitting the second wo3 is a mistake
I agree, 因为我要去中国，所以学习中文 is more colloquial. Chinese is a language that "eats" many words, especially proper nouns.
Is it possible to embed the pop up dictionary in the example sentence that is displayed when the user can't answer the question?
Native speaker here. The 因为 at the start is not necessary and is not said in common speech because the 所以 already implies the part in front is a reason.
I am not a Native speaker, but I agree!
"I want to go" in Chinese is "我想去"， "我要去" means "i have to go" MISTAKE here, folks. im a native chinese speaker
They do this a lot. :(
要 seems like a bad choice for this, since it makes the sentence "because Im going to china" 想 would be better
学 is enough by itself.