---Who is in the classroom, do you know?
---I think it ______ Li Lei.
---Where can we get a football?
---Let's _______
--Are you doing your homework?
--________.
--May I go to the cinema, Mum?
--Certainly. But you ________ be back by 11 o'clock.
--Is Mr Hu in the reading room?
--No, he ________ be there. He has gone to Tianjin.
---A:Will you please buy ______ cakes for us?
---B:Sure.
---A:What are you going to do tomorrow?
---B:______.
A:Why not come and join us in the game?
B:________. But I must meet my aunt at the airport.
---You've been to the Wolong Panda Reserve. Is it exciting?
---Well, let me ______ something about pandas.