The nature of viruses made _______ to detect for years, even after bacteria had been discovered and studied.
1. impossible
2. it impossible
3. them impossible
4. impossible for them
답이 3번인데 왜인지 아는사람??
| 이 글은 1년 전 (2025/1/15) 게시물이에요 |
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The nature of viruses made _______ to detect for years, even after bacteria had been discovered and studied. 1. impossible 2. it impossible 3. them impossible 4. impossible for them 답이 3번인데 왜인지 아는사람?? |