下面句子中可以根据单词的构词法猜测划线部分单词的词义的是( )
A. Mr. Brown is an amateur photographer.He is an engineer.But in his free time he likes to take pictures.
B. He is a resolute man. Once he made up his mind to do something, he won’t give it up halfway.
C. I shall persuade him to take the painkiller.