请教英语There must be some mistake.这句话书上的一句话,我觉得mistake应该变复数,你说呢

英语这句话如何回答我客户对我说“so sorry,it's my mistake”,我应该怎么回答呢,当然是要跟人家客气 英语翻译A:There must be some mistake,I didn't order the baked fl 怎麽区分mistake和be mistaken about的区别?I mistake his intentions这句话 There seen to be some mistake in your composition. "that must be a mistake" "no,it______a mistake" That must be a mistake.No,it____a mistake.A.must not be B.ne There appears to be some mistake,this bill is not clear.mist I must apologize for my mistake这 高考英语单选题1Drivers must be careful,for a single mistake can ___ 问一个词组（英语）为什么there be单数变复数是,a要变some?,还有为什么把there be句型盖一般疑问句的时 tom have made some mistake in his test这句话语法有错误么? 这句话为什么要加been啊 there's obviously just been a little mistake.