He studied hard and later became a well-known writer, ____ his father expected.
---Are you going to London for a holiday? ---___________.
On the other side of the street stand more than 180 houses, _______are in poor condition now.
I first met Mr Smith in America. He ________ at Stanford University then.
The book isn't intended for general readers probably because the author _______ too many scientific terms(术语) in it.
---- What does P.O._________? ----Poster order, I guess.