2. 外语
  3. The price of seafood used to be much lower than now, ______?

The price of seafood used to be much lower than now, ______?

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问题 The price of seafood used to be much lower than now, ______?
选项 A、wasn’t there
B、wasn’t it
C、doesn’t it
D、didn’t it
答案D
解析 根据句意可以判断此空的时态应该是过去时，所以排除[C]。主句的谓语是词组used to do sth．，可知问句应该用助动词didn’t。因此答案为[D]。
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