The number of people invited ____ fifty, but a number of them ___ absent for different reason.

One of the girls ________ from Hong Kong.

Across the Yangtze River ______ more than one bridge, the Nanjing Changjiang Bridge being the first one.

The country’s population     small, and most of its population      in the mountainous areas.

Every student as well as teachers who_______ to visit the museum ______ asked to be at the school gate on time.