There was so much noise in the classroom that the teacher couldn’t make himself _______.
(A) heard
(B) hearing
(C) to hear
(D) hear
出自:贵州理工学院大学英语

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