问题
选择题
The number of people invited to the conference _____ 150,but a number of them ______ absent for different reasons.
A．were;was
B．were;were
C．was;were
D．was;was
答案
答案：C
the number of+名词复数作主语时，谓语动词用单数；a number of+名词复数作主语时，表示“许多/大量的……”，谓语动词用复数。