---We can use QQ to talk with each other on the Internet.---Really? But can you tell me it

问题补充：

---We can use QQ to talk with each other on the Internet.

---Really? But can you tell me it.

A. how I can use

B. how can I use

C. why can I use

D. when I can use

答案：

(答案→)A. how I can use

B. how can I use

C. why can I use

D. when I can use

解析：句意：——我们可以用QQ在网上互相聊天。——真的？但是你能告诉我如何用它吗？结合句意，第二个人想知道如何用QQ，故排除CD两项。作为宾语从句的疑问句词序为：疑问词+主语+谓语+宾语。故选A。