Thenumberofprofessorspresent_______

发布时间：2020-07-26 00:28:22

The number of professors present ________ fifty, but a number of them________ not on time for different reasons．A.were; wasB.was; wasC.was; wereD.were; were

网友回答

C解析前者，作主语的中心词是the number“数目”，动词用单数was．后者，作主语的中心词是them(professors)动词用复数were．
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