◎ 题干
Prices ________ all the time and no one knows when they ________ stable.
[     ]
A.are going up; become
B.have been going up; will become
C.have gone up; will become
D.have been gone up; become
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“Prices ________ all the time and no one knows when they ________ stable.[ ]A.are going up; becomeB.have been going up; will becomeC.have gone up; will become…”主要考查了你对  【一般将来时】【现在完成进行时】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。