He is so shy that he _______ speaks in the public.
A. often B. frequently C. seldom D. sometimes
出自:统招专升本-----英语

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