Grandma said that she had a lot of trouble ____ your handwriting.

问题描述:

Grandma said that she had a lot of trouble ____ your handwriting.
a. to readb.to seec.readingd.in seeing理由
不是a d

选C
have trouble (in) doing sth 表示做...有困难,in可省.
handwriting是手写的东东,象信一类的,要用read,而不要用see
综上,选C为正确答案.