一道初中英语单选,要解释my mum is always waiting for me____the end of my doing homeworkA. at B. by C. in D. until

Question

一道初中英语单选,要解释
my mum is always waiting for me____the end of my doing homework
A. at B. by C. in D. until

Answer 1

B By the end of用于表示时间的场合,往往含有“不迟于”的意味.
at the end of 后边可以跟时间和地点名词,表示“在.末" 如at the end of this month 在这个月末,at the end of the road 在路的尽头