52单词网 > 高中英语 > 高中英语题库 > These machines ought once a week. [ ] A．to be cleanedB．to cleaned C．cleanD．be cl

These machines ought once a week. [ ] A．to be cleanedB．to cleaned C．cleanD．be cl

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These machines ought once a week. [ ] A．to be cleanedB．to cleaned C．cleanD．be cl

These machines ought ________ once a week.

[]

A．to be cleanedB．to cleanedC．cleanD．be cleaned

试题答案

答案：A

标签：onceweekoughtthesemachines

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