--May I watch TV for a while Daddy?--If you remember to turn it down a bit.A. ShouldB.

问题补充：

--May I watch TV for a while, Daddy?

--If you , remember to turn it down a bit.

A. Should

B. must

C. could

D. might

答案：

A. Should

(答案→)B. must

C. could

D. might

解析：考查情态动词用法。本题考查情态动词的特殊意义,must表示“非得，偏偏”；句意：—爸爸我能看一会电视吗？如果你非要看，记得把声音调小一点。根据句意说明B正确。