Use websites when purchasing items online and giving credit card numbers.
选择一项:
A. secured
B. suspected
C. suspicious
出自:人文英语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