Recently there ( )been a series of car accidents at the crossing.A have Bhad C has Dhaving
问题描述：
Recently there ( )been a series of car accidents at the crossing.
A have Bhad C has Dhaving
答
选C，there has been就是there is的完成时，文中有Recently，说明用现在完成时，所以选择has.
答
A. Recently看出使用现在完成时，accidents说明是用复数形式，所以选have不用has
答
C
series 是单复数同形的单词,a series of ...后动词用单数
two/ several series of...后面动词用复数