问题描述：
| When climbing the hill John was knocked unconscious by an _____rolling stone. |
| [ ] |
A. untouched |
考点提示：形容词
最佳答案： | B |
When climbing the hill John was knocked unconscious by an _____rolling stone. [ ]A. untouchedB. unex
When climbing the hill John was knocked unconscious by an _____rolling stone. [ ]A. untouchedB. unex
最佳答案： 