There must have been a large number of tourists in Sanya during the past Spring Festival, ?
A. mustn’t there
B. haven’t there
C. wasn’t there
D. didn’t there
网友回答
A. mustn’t there
B. haven’t there
(答案→)C. wasn’t there
D. didn’t there
解析：本题考查反义疑问句。there be句型的反意疑问句的主语永远用there。must的反义疑问句有时间状语，反义疑问部分用过去时态，故选C。