－Boy which website are you surfing on the Internet now?－Oh Mum...I tell you everything I d

问题补充：

－Boy，which website are you surfing on the Internet now?

－Oh，Mum...I tell you everything I do?

A. Must

B. Should

C. Can

D. Shall

答案：

(答案→)A. Must

B. Should

C. Can

D. Shall

解析：A考查情态动词。句意：——孩子，你上的哪个网站啊？ ——噢，妈妈……我非得告诉你我做的任何事吗？must表示“非得，偏偏，硬要”，符合语境。