i am not sure-----her sister will come here or stay at home

i am not sure-----her sister will come here or stay at home I am not sure( )he will come or not I am not sure _____ he will come here o Her sister ( )(not stay)at home on sundays She could stay at home,I'm not sure. I am not sure --he will come back . Are you going to her party?I’m not sure,I ( ) stay home...ne Are you going to her party?I’m not sure,I might stay home.问： l am not sure Tom will come here tomorrow________he comes he “I stay at home”or“I stay home”哪个正确? I am sure you are b____,You can stay at home by yourself Will your brother stay home tonight?I'm not quite sure.he___