What.s the purpose of writing a letter of invitation?

选择一项:
a. To inform people what is happening.
b. To tell the receivers the details of the coming events.
c. To invite people for a business event or personal parties.
出自:管理英语1

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