There is no doubt __________Herbert is the most industrious student in our class.

选择一项:
A. whether
B. that
C. what
出自:理工英语1

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