1) What are you doing at about 9 o'clock tonight?
I don't know yet.
2) What are you thinking about?
My brother. I often think about him these days
3) Do you fly to the sea or go there by train?
I am flying. my flight is tomorrow morning.
4) .... He always comes home about this time.
I think he is working in the library. He has a test tomorrow.
5) Usually Mary doesn't make mistakes...
was it? Does she know the result? If she does, I'm sure she is learning the words at the moment