By the middle of the 1920s the farthest corners of the earth explored.
A. are
B. were
C. have been
D. had been
By the middle of the 1920s the farthest corners of the earthexplored.A. areB. wereC. have
答案:2 悬赏:30 手机版
解决时间 2021-01-04 05:06
- 提问者网友：火车头
- 2021-01-03 11:17
最佳答案
- 五星知识达人网友：千杯敬自由
- 2021-01-03 12:32
A. areB. wereC. have been(答案→)D. had been解析：可联系答.案.网客服索取。
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- 1楼网友：我住北渡口
- 2021-01-03 13:19
谢谢了
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