单选(2分)
3. Every minute is made full use of _______ our lessons.



得分/总分

A.
A. studying


B.
D. being studied


C.
B. to study


D.
C. study
出自:兰州交通大学大学英语3

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