Milk bottles need cleaning thoroughly before they are used a

时间:2022-06-24 12:25来源:未知作者:admin 点击: 次

10. Milk bottles need cleaning thoroughly before they are used again, _______ they? A. don’t B. mustn’t C. needn’t D. aren’t

10. Milk bottles need cleaning thoroughly before they are used again, _______ they?

A. don’t

B. mustn’t

C. needn’t

D. aren’t

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