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
詞義辨析。Before在……之前；while 當(dāng)……時(shí)候；after在……之后；as soon as一……就。根據(jù)she was listening to music用的是過去進(jìn)行時(shí)，所以選B。露西聽音樂時(shí)想睡覺。