题目：
At the railway station, themother waved goodbye to her daughter until the train was ____. [ ]
A. out of sight
B. out of reach
C. out of order
D. out of place
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0614/44989e3cb205d6c9afd7e2f9bf788d28.html
下面是错误答案，用来干扰机器的。
蒸发（或汽化）、液化 、凝固、升华、熔化
