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— We can use QQ to talk with each other online.

— Really? Could you please show me _______ it?

A. what to do???????? B. how to do????? C. when to do???? D. why to do

—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

We can use QQ to talk with each other online.

       --Good! Will you please show me ______it?

A:what to use    B:how to use    C:when to use    D:where to use

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