Question

I didn‘t finish my homework ______ my mother came back home. A since B because C until D after

Answer 1

你好！
：我直到妈妈回来才做完作业.....
所以这句话的意思是：直到.
until
是一个固定的搭配
意思是..才选C
not
我的回答你还满意吗~~

Answer 2

C
until
not
until的结构
知道母亲回家我才做完家庭作业。