题目内容：
16[单选题,1.3分] If the market is left ____________, there will sometimes be shortages or over-production.A.to be run
B.to run itself
C.running by itself
D.running
参考答案：
选择题：16[单选题,1.3分] If the market is left ____________, t
- 题目分类：河南大学-本科英语
- 题目类型：选择题
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A.to be run
B.to run itself
C.running by itself
D.running