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【題目】When traveling, you sometimes have to go somewhere alone, always ____ your attention on your belongings.

A. focusing B. focuses C. focused D. focus

【答案】A

【解析】

試題分析：考查分詞做狀語。本句中動詞“focus one's attention on聚焦于....”與主語you構成主動關系，所以使用現在分詞在句中做伴隨狀語。句意：當你旅行的時候，有時候，你不得不獨自去某個地方，這時你總是要聚焦于自己的財產。故A正確。

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