--- Which month has ________ days in a year?
--- February.
---Is that Helen’s aunt?
--- .That is Mary’s aunt.
---I’ve never been to the Great Wall, what about you?
---______. I think it must be very great.
---What is a writing brush, do you know?
---It’s used ______ writing and drawing.
---I am going to spend my summer holiday in Hainan.
---How lucky you are! ____________ And don’t forget to e-mail me.
--- Excuse me, I am looking for a post office. Could you tell me_____?
OK. It’s not far from here; go ahead until you can find a hospital on the left, and the post office you are looking for is the opposite of the hospital.