___ he was taking off his fur coat,he found one of the gold buttons was misa、Since b、Once c、 As d、 until

分类: 作业答案 • 2022-04-18 12:52:16

问题描述：

___ he was taking off his fur coat,he found one of the gold buttons was mis
a、Since
b、Once
c、 As
d、 until

答

c 当…………的时候