Attention, please! All the mobile phones must______ before the meeting starts

Aturn off        Bbe turned off        Cbe turning off

1、手機(jī)被關(guān)掉要用被動(dòng)語(yǔ)態(tài)。故選B。

請(qǐng)?jiān)谶@里輸入關(guān)鍵詞:
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科目:初中英語(yǔ) 來(lái)源: 題型:

Attention, please! All the mobile phones must______ before the meeting starts.

A.turn off        B.be turned off        C.be turning off

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科目:初中英語(yǔ) 來(lái)源:2008年福建省廈門(mén)市初中畢業(yè)升學(xué)統(tǒng)一考試、英語(yǔ)試卷 題型:023

Attention, please!All the mobile phones must ________ before the meeting starts

[  ]

A.turn off

B.be turned off

C.be turning off

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