问题
选择题
— What was your brother like when he was young?
— He _______ be quiet, but now he’s very outgoing.
A．was used to
B．used to
C．used by
D．was used for
答案
答案：B
本题的含义是他原先是文静的，但现在他非常外向，used to+动词原形，表示曾今或原先的意思，故本题选B。