ISWAn.国际固体废物和公共清洁协会isv.是（be的第三人称单数一般现在时）Is anything the matter有什么问题吗?Is that John King?Is used in two ways.有两种使用方式。Is not that great?is skilled in horology精于钟表制造Is it a bad thing?Is John repeating?Is Master Card OK?Is he a high jumper.他是跳高的吗。Issatchenkia terricola陆生伊萨酵母