Inthe1950sintheUSA,mostfamilieshadjustonephoneathome,a...
- 习题库
- 关注:1.53W次
问题详情:
In the 1950s in the USA, most families had just one phone at home, and wireless phones ____ yet.
A. haven’t invented B. haven’t been invented
C. hadn’t invented D. hadn’t been invented
【回答】
D
知识点:动词时态与语态
题型:选择题
标签:
- 文章版权属于文章作者所有,转载请注明 https://zhongwengu.com/zh/exercises/3qmlg9.html