单项选择题
A trouble of the eye drove me mad（）fear of blindness.
A．with B．in C．by D．to
单项选择题 The farmer kept the cow（）so that it would not go away.
单项选择题 Last night, Mark said that he（）the book by the end of next week.
单项选择题 This dictionary will prove（）to you in your English study.
