He went home ____10:00.But he didn't go to bed____11:00.

问题描述:

He went home ____10:00.But he didn't go to bed____11:00.
A.by;by B.till;till C.by;till 为啥要填C?理由!
说明by 与till,和until得区别!

C
by 10:00 十点之前
not .until 直到.说明by 与till,和until得区别!!!!