根据句意和汉语注释,写出单词的正确形式。
Though my grandma is in her ___________ ( 九十), she does housework every day.
He is rich, he still lives a ______(简朴的)life than most people.
We don’t know whether the bicycles are the _____________( 推销员)
People need to buy tickets before _________(进入) the cinema.