题目

把（+5）﹣（+3）﹣（﹣1）+（﹣5）写成省略括号的和的形式是 . 答案：【1】+5-3+1-5— May I use your pen? Mine is broken.— Of course, here are two and you can use ________ of them.A.bothB.everyC.anyD.either