单选题：With prices ______ so much, it's hard for the company to pla

题目内容：

With prices ______ so much, it's hard for the company to plan a budget． A．fluctuating
B．waving
C．swinging
D．vibrating

参考答案：

答案解析：

In this factory, suggestions often have to wait for months

In this factory, suggestions often have to wait for months before they are full

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