Every evening after dinner,if not____from work,i will spend some time walking my dog.A.being tiredb.tiringc.tiredd.to be tired
问题描述：
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
if not ...... ,I will ......
前一句是现在时态，后一句是将来时态，tired，劳累的意思，这里可以省略be动词
其余三个时态都有问题
答
这个应该是省略主语，如果从句的主语和主句的主语一样是可以省略掉的，即if i am not tired
答
这是if I am not tired from work 的省略式
be tired from...因为.而疲劳