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【題目】If you are addicted to your mobile phone, that’s ______ you should lay it down and be involved in meaningful activities.

A.whenB.whyC.whereD.how

【答案】A

【解析】

考查表語從句。句意:如果你沉迷于手機,那么該是你放下手機,參加有意義的活動的時候了。此處是表語從句,引導詞在從句中作時間狀語,應使用when引導。故選A。

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