15.I _____,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

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15.I _____,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

15.I _____,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
15.I _____,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

15.I _____,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
选择A
只有现在分词短语doing能够作主句的伴随状语,所以排除其它答案,选出A
Walking or sleeping 为现在分词短语作伴随状语,用于修饰后面的主句.
翻译为:走路和睡觉的时候,那个课题总是出现在我的脑海里.
对你有所帮助的话,

C. Having walked or slept

I _____, the subject was always in my mind. 

 

  • 选择:A. Walking or sleeping

  • 解析:意思是“无论是在走路还是在睡觉,这个题目总萦绕在我的脑际”也就是说,题目在脑际是与“走路或睡觉是同步发生的,因此用现在分词的一般形式”。