how many legs ( )an elephant have?
问题描述:
how many legs ( )an elephant have?
答
does,这是一句一般疑问句,()处必须填一个助动词,主语elephant是单数,所以用三单一does
how many legs ( )an elephant have?
does,这是一句一般疑问句,()处必须填一个助动词,主语elephant是单数,所以用三单一does