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

---Really? Will you please show me it?

A. what to useB. how to useC. how can I use D. what can I use

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

---Really? Will you please show me ________ it?             

A. how to use     B. what to use     C. how can I use    D. where can I use