how many legs does crab have?为什么要加个have

how many legs does crab have?为什么要加个have How many legs does a crab have.翻译和回答 how many legs does a spider have how many legs does an ant have/ 用many legs it how does have组成句子 How many legs does a cow have?可以回答Four legs . how many legs ( )an elephant have? How many legs do ant have How many legs do horses have? 求解一个脑筋急转弯 how many legs does an elephant have if you call it 英语谜语猜猜看1：How many legs does a cow have? How many .does.have?造句