It is ____ since I visited the Great Wall. It is ____ that I visited the Great Wall. It is ____ that I will visit the Great Wall. A. many years . B. years ago . C. for many years . D. in many years
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【单选题】package a; public class Student{ private int age; private String name; public Student(String name,int age){ this.name=name; this.age=age; } public String toString(){ return this.name+this.age; } publi...