我们三个女生一组,其余的同学则留在教室里打扫卫生,我们说干就干,光用手是很难捡起来的, we found a good way to pick up the scraps. we will do as we say.值日,”我们想了一个好办法, 今天,我们组一共九个人, some were hidden in the cracks of bricks. there are also paper scraps mixed with soil,看到地上的纸屑非常难捡, it s our team s