【題目】I can't concentrate my studies with all that noise going on.

【答案】on
【解析】句意:因?yàn)槟切┰胍粢恢痹诔掷m(xù),我不能集中心思在學(xué)習(xí)上。concentrate on“集中注意力于……”,是固定搭配。

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