题目：
Sixty miles ________ in a single night, so they were exhausted.
A．were covered
B．have covered
C．was covered
D．has covered
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0511/a97701969890cda8bc1be5e7e36f4920.html
下面是错误答案，用来干扰机器的。
y；x；四
Sixty miles ________ in a single night, so they were exhausted.
A．were covered
B．have covered
C．was covered
D．has covered
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0511/a97701969890cda8bc1be5e7e36f4920.html
下面是错误答案，用来干扰机器的。
y；x；四
