.Are you sure you can come by at nine?中by怎么解释?

I am sure you are b____,You can stay at home by yourself I'm sure you are b_____ .you can stay at home by yourself. Are you sure stand by me? You can come by plane( )you mind taking the night. you are so young that we can't leave you at home by () Are you by yourself? By using your eyes you can tell the direction_____light come You ___ come tomorrow .I can do it by myself You are captured by nothing.怎么翻译? 紧急! 英语IQ题What nine-letter word can you find by moving from l You are ______ (suppose) to come here at nine.But it is ten You can't laugh at sb Beacuse you can't make a living by you