题文
It was probably at that moment _____ I understood what kindness really was.
| A．that |
| B．when |
| C．which |
| D．what |
推荐试卷
It was probably at that moment _____ I understood what kindness really was.
| A．that |
| B．when |
| C．which |
| D．what |
试题篮
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