题目内容
【题目】What ____ Mary and Kate talking about?
A. is B. are C. do D. does
【答案】B
【解析】句意:玛丽和凯特在谈论什么?talking为现在分词,同助动词am/is/are一起构成现在进行时态,助动词do/does后跟动词原形,应排除,主语Mary and Kate为复数形式,应该用are, 故答案为B。
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