请根据所提供的首字母完成对话。

1. What a____________ you g____________ to do today?

    I a____________ going to p____________ the piano.

2. I____________ he going to buy a new book?

    Yes, he is. He is going to b____________ a storybook.

3. W____________ are they going?

    They are going to the l____________.

4. A____________ the girls going to d____________ their homework?

    No, they a____________.

5. W____________ you m____________ a cake on your birthday?

    No, that's difficult. I can buy one.

患者主诉：一侧后牙嵌塞食物已半年。查：右上6近中龋，探敏，叩（-），冷测正常牙面同对照牙，进入龋洞时引起疼痛，去除刺激立即消失。

最可能的治疗是（）

A.药物治疗

B.再矿化治疗

C.磨除法

D.树脂充填

E.垫底，银汞充填