怎么用英语写邀请函?Kate:Hello,Jane.Are you free this Saturday evening

Are you free this Saturday? 一个关于英语的问题A:Hello,Huiyan.Are you free this Saturday?B:Yes.（①） 英语补全对话Jane:Hello!May I speak to Kate?Kate:This is Kate.Jane: 朋友们帮帮忙 Are you free this Saturday?My treat if you are free this saturday please arra hello,kate,（ ）are you? Are you free this evening等于哪个句子 —Are you free this evening? Are you free this afternoon?怎么回答 Are you free this afternoon?怎么翻译 邀请函英语怎么写 用英语写邀请函.怎么写?