— Show me the letter，please．— Which one？The one________pencil？A.inB.withC.byD.on
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A解析The one in pencil．＝The letter in pencil．＝Do you want the letter in pencil？＝Do you want the letter which is written in pencil？pencil在此处是指材料，in pencil (用铅笔)，(注意没有冠词)，有时意思等于with a pencil，which is written in pencil？可以改为which is written with a pencil？