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  3. There has been a great increase in retail sales, ______?

There has been a great increase in retail sales, ______?

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问题 There has been a great increase in retail sales, ______?
选项 A、does there
B、isn’t there
C、hasn’t there
D、isn’t it
答案C
解析 主句是there be句型，而且是肯定句，加上主句使用了现在完成时，因此，反意疑问部分要使用hasn’t there。例如：There have been a lot of explanations as to the causes ofpanic attacks，haven’t there?关于恐惧症的起因，有好多种解释，不是吗?There has beennotable progress in economic cooperation between the two countries，hasn’t there?两国间的经济合作有了显著进展，不是吗?
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