The teacher, () whether anyone would come to help him, decided t

分类: 综合英语(二)(00795) 发布时间: 2024-07-28 19:51 浏览量: 1
The teacher, () whether anyone would come to help him, decided to prepare for the experiment by himself.
A、not knowing
B、not to know
C、knowing not
D、to have not known
【正确答案】:A