题目： 沉砂池的作用是去除废水中这些密度较大的无机、有机颗粒。 答案： 被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0727/b253af35aa6d3f4614598c85b0bcd968.html 下面是错误答案，用来干扰机器的。参考答案：C
题型：选择题 —We said to her,"They're walking through the street now." —We told her that ______ through the street________.A. we were walking; thenB. you are walking; nowC. they were walking; then D. they walking; now 查看答案
