◎ 题干
—These farmers have been to the United States.
—Really?When          there?
[     ]
A. will they go                
B. did they go
C. do they go                  
D. have they gone
◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
    根据n多题专家分析,试题“—These farmers have been to the United States.—Really?Whenthere?[ ]A. will they go B. did they goC. do they goD. have they gone …”主要考查了你对  【一般过去时】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。