I can’t send an e-mail. Would you please teach me 　　　it?

I can’t send an e-mail. Would you please teach me 　　　it?

A. how doing         B. when to do  C. what doing          D. how to do

I can’t send an e-mail. Would you please teach me 　　　it?

1. A.
   how doing
2. B.
   when to do
3. C.
   what doing
4. D.
   how to do

I can’t send an e-mail. Would you please show me      it?

A、doing    B、to do    C、how to do

I can’t send an e-mail Would you please show me __________it?

A．doing    B．to do            C．what to do             D．how to do