I don't think she si our new teacher ,isn't she?

I don't think she si our new teacher ,isn't she? I don’t think the girl is right,is she还是isn’t she? I ( ) think she ( ) very friendly.A.don't;is B./;isn't C.are 2. I think she must be our new teacher, _______? i don’t think she 怎么怎么着 i don't think she was American I don't think she meant__you. 两个英语题I don't think she is careful enough,___?A.is she B.isn' 1 She isn't interested maths,I think I ___ think she is so great A not B don't C isn't D am not 单 I don't think she is a good teacher .（改为反意疑问句 I don't think she is a good teacher（改为否定疑问句） 理由