—Could you tell me when in Bangkok?—Sorry I don’t know. I even want to know what to do w

问题补充：

—Could you tell me when in Bangkok?

—Sorry, I don’t know. I even want to know what to do when .

A. to arrive, to arrive

B. arriving, to arrive

C. to arrive, arriving

D. should we arrive, arriving

答案：

A. to arrive, to arrive

B. arriving, to arrive

(答案→)C. to arrive, arriving

D. should we arrive, arriving

解析：句意：你能告诉我什么时候能到Bangkok吗？抱歉，我不知道。我甚至想知道当我到了之后做什么。疑问词+to do sth ,在居中做宾语，when to arrive何时到达。When也可表示当....时候，引导时间状语从句：I even want to know what to do when (I am )arriving.当主句，从句主语一致时，可以省略从句的主语和谓语。