1.  A . Yes£¬ please .      B. No , it isn’t .      C. Never mind ¡¡¡¡¡¡

2.  A. That sounds good    B . That’s all right    C. That’s right .

3.¡¡A. Two years ago .     B . For two years     C. In two years

4.  A . No , you can’t      B.  No , thanks .     C. You are welcome .

5.  A . No , you mustn’t .   B. Yes , you need .    C. No , you may not .