Question

--- What was your brother like when he was young?
--- He ______ be quiet, but now he’s very outgoing.

1. A.
   was used to
2. B.
   used to
3. C.
   used by
4. D.
   was used for

Answer 1

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。