--- Liu Tao has never read the book The Adventure of Tom Sawyer , _________ he?--- _________. He told me it's very interesting. He'd like to read it again.
----______does your father work ? ----He works in a factory.
___________ meat is not good for children.
The library is _______ the right side of the playground
There are forty _______ in the hospital.
----What class are you in? ----I’m in ____________.