Sorry to you but could I ask a quick question?—No problem.A. worryB. preventC. troubleD

问题补充：

Sorry to you, but could I ask a quick question?

—No problem.

A. worry

B. prevent

C. trouble

D. disappoint

答案：

A. worry

B. prevent

(答案→)C. trouble

D. disappoint

解析：根据句子语境，这里是想问对方一个问题，所以才用trouble表示给对方添麻烦。