问题补充:
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
答案:
A. being tired
B. tiring
(答案→)C. tired
D. to be tired
解析:省略句式。在if引导的条件状语从句中,从句中还原应为if I am not tired from work,根据省略的原则,所以选C。