A beam of light will not bend round corners unless to do so with the help of a reflecting device .
A. having been made
B. being made
C. made
D. you make
A beam of light will not bend round corners unlessto do so with the help of a reflecting d
答案:2 悬赏:40 手机版
解决时间 2021-04-14 17:46
- 提问者网友：寂寞梧桐
- 2021-04-14 14:41
最佳答案
- 五星知识达人网友：街头电车
- 2021-04-14 15:49
A. having been madeB. being made(答案→)C. madeD. you make解析：unless引起条件状语从句中后面省略了it was。
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- 1楼网友：低音帝王
- 2021-04-14 16:03
感谢回答，我学习了
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