Question

_____, the subject was always in my mind.

A. Walking or sleeping                     B. Walking or slept

C. Having walked or slept                  D. To walk and sleep

Answer 1

A

解析:

题意为“无论是走路还是睡觉，我总是在想这个问题。”注意：此题中-ing形式短语的逻辑主语与句子的主语并不一致，有的语法家称其为“垂悬分词”。又如：Having suffered such heavy pollution already, it may now be too late to clean up the river. （NMET2001）