Some "Wh" questions:

Why am   I    talking?
When are you talking?
Why is  s/he talking?
When are  we talking?
Why are you  talking?
When are they talking?

And this one is very common:

How are you doing?  I am doing fine.

We think you are doing fine. 
    
                                                  End Lesson B Grammar

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Exercises?

Quick Answers™?

Grammar B Main?