当前位置:考试网  > 试卷库  > 学历类  > 研究生考试  > 考研  > 考研英语二  >  How long ________ they ________ (dig) the ditch?
试题预览

How long ________ they ________ (dig) the ditch?

查看答案
收藏
纠错
正确答案:

have … been digging

答案解析:

暂无解析

你可能感兴趣的试题

Onlywhenyouhaveobtainedsufficientdata________cometoasoundconclusion.

Iwishyou________likethat.

Ifound________toanswerallthequestionswithinthetimegiven.

You________gonow.It’sgettinglate.

To succeed in a scientific research project ________.

扫一扫,手机做题