No, There ist'n
Yes there is
No it is not
Yes, they are
No, he isn't
No, he/she(смотря кто друг муж.р/жен) isn't
No , i'm not
Yes, they are
Yes they are
Yes it is
Yes it is
No it isn't
Yes it is
No they aren't
Yes they are
No she isn't
Yes it is
Yes it is
