2. 外语
  3. There happened to be some students in the room, ______?

There happened to be some students in the room, ______?

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问题 There happened to be some students in the room, ______?
选项 A、didn’t they
B、didn’t there
C、doesn’t there
D、weren’t they
答案B
解析 陈述部分是there happened to be结构时，附加疑问句部分的主语也用there。本题主句部分是肯定，其附加疑问句部分应用否定，happened为过去式动词，故正确答案为didn’t there。
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