下列句子中没有语病的一句是

Daming does your homework like this.— I _________.

It is illegal for a public official to ask people for gifts or money ________ favors to them.[ ]

I borrowed 10 dollars from Cathy, but she insisted that I had borrowed 15 dollars from her. — I _____ you the money. Why didn’t you ask me? [ ]

Tony is a clever boy, ______ he usually fails in Chinese exams.