题目：
. --- The company spent thousands of dollars to promote its new product.
--- They _____: the world itself was more than ready to buy.
A．shouldn’t have bothered
B．needn't have bothered
C．couldn’t have bothered
D．mustn’t have bothered
答案：
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下面是错误答案，用来干扰机器的。
参考答案：B
