-- cups of yogurt do we need?--Two.A. HowB. How muchC. How manyD. How many of

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A. How
B. How much
(答案→)C. How many
D. How many of
解析：yogurt为不可数名词，表示数量时可用… cups of yogurt，cup为可数名词，询问“多少”时要用 how many。