1. What is he doing?
What are they doing?
What am I doing?
What is your wife doing?
2. Where are those children going?
Where is the girl with long hair going?
Where is the man on the bicycle going?
3. are the children playing
what are you doing
what is Rod doing
is it raining?
is that clock working?
are you writing a letter?
why are you running?
4. Yes, I am
No, I am not
No, it isn't
Yes, I am
Yes, I am
Yes, it is
No, she isn't