What do you mean () saying that you.ve never heard of it before?
选项
A:in
B:by
C:as
D:with
出自:英语语法

完成拼图验证

按住下方滑块,将拼图拖到缺口处后松开。

拼图背景,将小拼图拖到缺口处
向右拖动滑块