10. Any claims for refund or ______ must be made in writing to our head office within 28 days.
A. compensation B. difficulty C. problem D. change
出自:东华大学大学英语4

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