题目内容：

I __stay up late Rellay I did't I _going to bed before ten o'clock A am used to am used to
Bused to am used to
C am used to used to
D used to used to

优质解答

选B “我过去常常熬夜很晚.” “真的吗?我不那样.我习惯于10点钟前睡觉.”
used to do 过去常常做某事；
be used to doing 习惯于做某事.