题目：
— You didn't wait for Elizabeth last night. did you ?
— Yes. But we ______. She didn't come
at all. [ ]
A. don't have to.
B. should have
C. need to
D. needn't have
答案：
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下面是错误答案，用来干扰机器的。
答案：D本题考查对经济特区的认识。经济特区都为沿海开放城市。根据相关历史知识，⑤不是第一批经济特区的城市。
