[填空题,5分] The child always does his homework (willing) so he hasn’t made much progress.
出自:河南农业大学-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