A. I am student B. I am Lily C. Lily am student D. I am student Lily
A. "取代字符串","被取代字符串","来源字符串" B. "被取代字符串","取代字符串","来源字符串" C. "来源字符串","取代字符串","被取代字符串" D. "来源字符串","被取代字符串","取代字符串"
A. 对 B. 错