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单选题
A professor and a writer ___ present at the meeting.
A
had been
B
were
C
is
D
was
答案解析
正确答案：B
解析：
这是一道关于主谓一致和时态的题目。
首先，分析句子结构和时态：
* 句子描述的是“一个教授和一个作家在会议上”的状态，这是一个过去的事实，所以需要用一般过去时。
接下来，确定主语的单复数：
* “A professor and a writer”作为主语，虽然有两个名词，但它们是并列关系，且各自独立，所以表示的是两个人，主语为复数。
现在，根据时态和主谓一致原则来分析选项：
A. had been：过去完成时，表示过去的过去，与题意不符。
B. were：一般过去时的复数形式，符合题意。
C. is：一般现在时的单数形式，不符合题意。
D. was：一般过去时的单数形式，不符合题意。
因此，正确答案是B，即“were”，因为它正确地表示了主语为复数且时态为一般过去时的情况。
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