问题
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
答案
C
名词前有the number of 修饰，谓语用单数，名词前有a number of 修饰，谓语用复数。
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