I have nothing ()except my grandma. A.to worrying B.worrying C.to worry
问题描述：
I have nothing ()except my grandma. A.to worrying B.worrying C.to worry
选哪个哇...为什么呢
答
have something to do 意思是有什么事要做...
have nothing to worry 意思就是没有什么要担心的.
这里的不定式表将来,将来要做但没做.
综上,选C
如果有 to worry about 更好.有to worry about......我选哪个呢。。。。那就选 to worry about, worry 是不及物动词，需要用about