--Is Mr.Brown driving here?--I am not sure.He ____ come by a

--Is Mr.Brown driving here?--I am not sure.He ____ come by a --Is Mr Brown driving here?---I'm not sure.He___come by trai -ls Mr.Brown driving here?-l'm not sure.He ______come by tra -Is Mr Smith driving here?-I'm not sure.He _____ Is Mr.Brown driving here? I am not sure _____ he will come here o I am not sure( )he will come or not I hear Mr Brown lives here,but I'm not sure( ) I am not sure --he will come back . There is ____ that he may come ,but I'm not sure .(possible) 中学英语语法问题I am not sure what is he talking about.I am not sure I g____ Mr tan will come to our party but I am not sure.