题目内容
【题目】---What did Helen do on Tuesday?
---There _____ a Halloween.
A.is B.are C.was D.were
【答案】C
【解析】由did可知句子用一般过去时，a Halloween是单数，所以be动词应该用was.
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题目内容
【题目】---What did Helen do on Tuesday?
---There _____ a Halloween.
A.is B.are C.was D.were
【答案】C
【解析】由did可知句子用一般过去时，a Halloween是单数，所以be动词应该用was.