Every evening after dinner, if not from work, I will spend some time walking my dog.
A. being tired
B. tiring
C. tired
D. to be tired
网友回答
A. being tired
B. tiring
(答案→)C. tired
D. to be tired
解析：本题考查省略句式。在if引导的条件状语从句中，从句中还原应为if am not tired from work，根据省略的原则，所以答案选C。句意：每天晚饭后，如果不是很累，我会花一些时间遛狗。主句主语I与从句中的tire(使……劳累)为被动关系，所以要用过去分词，又因该句的动作经常发生，于是排除了选项A和选项D。