Carelessness isn't the main reason( )you didn't do well in the exam.

Carelessness isn't the main reason( )you didn't do well in the exam. no,it isn't isn't just good Isn't he cute? isn't it nice isn't that amazing isn't she lovely No,she isn't. this just isn't No,she isn't. say it isn`t Isn't that grand? 英语翻译( )isn't( )here there isn't NO he isn't isn‘t什么意思 Isn't she deneuvely? isn't?是什么意思?