A series of robberies ______ recently.
A、
has been reported
B、
has reported
C、
have been reported
D、
have reported
【正确答案】
A
【答案解析】
“抢劫案”与“报道”之间是被动关系,首先排除主动语态的B、D选项。a series of,aspecies of,a portion of,a kind/type of等加上名词时,谓语动词一般用单数形式,因为series,species,portion,kind,type前面被不定冠词a限定,因此是单数。
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