题目1单选题
What is the definition of suffixA. It means the affix which only changes the meaning of the wordsB. It means the affix, which is added to the end of a word, and which usually changes the part of speech of a wordC. It means the affix, which is added to the beginning of a word, and which usually changes a word into another wordD. It means the affix which only changes the form of the words