Is it normal that in September hotels near universities are overcrowded, _____ many parents from a distance nowhere to stay but to sleep on the playground ?
Because of the rain, we’ll have our P.E. class in the classroom _____ the playground.
A flag is _____ a piece of cloth. It stands for a nation’s people, their land and their history.
—_____ I invite Jack to the party? —Yes, it’ll be nice if you _____.
The couple _____ for thirty years.
Her question was so difficult that I could hardly make any ____ of it at all.