A number of students ______ late for class because of the rain.

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问题 A number of students ______ late for class because of the rain.

选项 A、being
B、was
C、is
D、were

答案D

解析 a number of意思为“很多,许多”,它修饰复数名同作主语时,谓语动词用复数,例如:A large number of people have applied.(很多人都已申请。)而the number of意为“……的数量”,谓语动词用单数,例如:The number of books stolen from the library is large.(图书馆遗失的书很多。)
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