He told me that by the end of this year they______together for twenty years．

A．would work

B．had been working

C．will have worked

D．would have been working

下列程序的执行结果是( )。
#include＜iostream.h＞
#include＜stdlib.h＞
Class TestClass

public：
int x,y；
TestClass()x=y=0;
TestClass(int a,int b)x=a;y=b;
void disp()

cout＜＜"x="＜＜x＜＜",y="＜＜y＜＜end1；

；
void main()

TestClass s1(2,3)；
s1.disp()；

A．x=2,y=2

B．x=3,y=3

C．x=2,y=3

D．x=3,y=2