单项选择题

The number of people invited fifty, but a number of them absent for different reasons.

A．were ;was
B．was; was
C．was; were
D．were; were

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单项选择题

When she heard that her mother was safe she immediately _______

A．hurried up
B．kept up
C．cheered up
D．held up

单项选择题

Because of the reduction of air pollution, this city now is a good place _______

A．where to live
B．which to live
C．to be lived
D．to live

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