—Have you finished the work? ( )
—Not yet, but no matter how hard it is, we.ll keep ___ until we make it.(本题2.0分)
A. failed
B. trying
C. tried
D. failing
出自:平顶山学院-大学英语2

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