--- What did you mention you’d been accustomed to?
--- to soft music before going to bed.
A. To listen
B. Listen
C. Listening
D. Listens
网友回答
A. To listen
B. Listen
(答案→)C. Listening
D. Listens
解析:be accustomed to “习惯于”to为介词后接动名词作宾语,本题完整回答为:I mentioned I had been accustomed to Listening to soft music before going to bed..