在横线上补写三个句子,要求句式整齐,构成排比句。
《项羽本纪》描写了一出有着史诗般气魄的历史悲剧,其中,有成功的英雄,也有失败的豪杰。《鸿门宴》以传神的笔触,写出了项羽磊落的气概,____,____,____,范增无奈的心情。
— There's somebody at the door. Who ____ it be? Is it the postman?—No. It ______ be him. It's just seven o'clock. It's too early.
12的相反数是( )