Maybe she'll come,but I'm not quite c( ) about that.

Maybe she'll come,but I'm not quite c( ) about that. She ___ know the answer,but I'm not sure.A.maybe B.may be C. l am not quite sure about it.Maybe he will come,and maybe he Maybe my English is not that good but that doesn't mean I'm She ____ know the answer ,but I'm not sure .A.maybe B.may She( )go to school by bus,but I'm not ture .A maybe B may be He will come .I‘m not sure.A.may B.maybe C.may be D.possible Jay__know the answer,but I'm not sure.A.maybe B.may be C.may _____ she is at home ,I'm not sure A,May be. B Maybe. C. May I'm not quite ____ (也许)she will come back tonight,but I'm not sure. I'm not that sure when she'll be back.是什么从句?