Question

Lucy fell asleep_______ she was listening to music.

1. A.
   before
2. B.
   while
3. C.
   after
4. D.
   as soon as

Answer 1

B
词义辨析。Before在……之前；while 当……时候；after在……之后；as soon as一……就。根据she was listening to music用的是过去进行时，所以选B。露西听音乐时想睡觉。