It was at this shop ______ I came across one of my old friends.
The Chinese University of Hong Kong, founded in 1963, ____ 50 in 2013.
My mother has two brothers, both of ____ graduating from Beijing University.
Wouldn’t it be ____ wonderful world if all nations lived in ____ peace with one another?
—Shall I help you with the washing up?— .I'll do it later.
––What a journey! We’ve finally arrived!––_____ an out-of-date train schedule, we would not have missed the train.