--Laura didn’t join in their dancing last night , did she ?--________________, because she fell off her bike and hurt her legsA.Yes, she didB.No, she didn’tC.Yes, she didn’t .D.No, she did
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B解析B 反意疑问句的回答根据事实，肯定用yes，否定用no。根据句意，她从自行车上摔下来伤到腿了。可知，她没去。排除A/C, D项前后矛盾。故选B。