-----We can use QQ to talk with each other online.
-----Really? Could you 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 online.
-----Really? Could you show me _____________it?
| A．what to do | B．how to do |
| C．when to do | D．why to do |
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