It isn't_____pen,it's______.(he,she) 用物主代词填空怎么填

It isn't_____pen,it's______.(he,she) 用物主代词填空怎么填 no,it isn't isn't it nice say it isn`t It isn't_________case.(she) but it is impossible isn't it? it isn't =it's not It's not = It isn't it sound very good ,isn't it? 英语翻译Isn't it dangetous a isn't ball it isn' t it怎么读 Isn’t it a something? Say It isnt Sohsgsgssg “say it isn't so” Isn't it great翻译 I know it isn’t isn't it?是什么意思啊