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Every evening after dinner, if not _____ from work, I’ll spend some time walking my dog.
A.being tiredB.tiring
C.tiredD.to be tired
C

试题分析:本题考查省略句式。如果主句的主语和从句的主语一致,从句的主语连同be 可一起省略,在if引导的条件状语从句中?从句还原应为if I am not tired from work?根据省略的原则?句意:每天晚上吃完晚饭,如果工作不累,我会花时间遛狗。所以答案选C。
点评:如果主句的主语和从句的主语一致,且状语从句的谓语动词中有 be 动词,从句的主语连同be 可一起省略,该类状语从句多为时间、地点、条件、方式或让步等,连词为when, while, though, if, unless, although, as if 等,后面通常接分词、不定式、形容词、名词等。
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