Mayi help you 是一般疑问句,所以对Mayi help you 的回答或者是yes,或者是no.在你的句子里面,答案应该是yes,please.那个第一题答案是是thank for your help你好。thank you for your help是不可能的。1 - May i help you?- Yes, please. i want a piece of sports shoes 看见了吗？这就是yes please的基本用法。let 'stake taxi .oh we can't为什么we shouldn't不行》你好。thank you for your help是不可能的。1 - May i help you?- Yes, please. i want a piece of sports shoes 看见了吗？这就是yes please的基本用法。2 A ： ok , here are the books you need for your workB:thank you for your help.请注意这里的对话。let 'stake a taxi .oh we can't为什么we shouldn't不行》--------其实，这两个回答都是对的，问题是你的语境是什么？以后多提问一些有语境的问题，好吗？嗯，问题是we are tired .let's take a taxi home ,oh. we........,it is near our home .你说填什么呢？we shouldn't/ needn't /don't have to .