A:She's tired.
B:She drinks too much milk.
C:She can't go to sleep.
12-9=( )
《论语》十二章(节选)
①曾子曰:“吾日三省吾身:为人谋而不忠乎?与朋友交而不信乎?传不习乎?”
②子曰:“吾十有五而志于学,三十而立,四十而不惑,五十而知天命,六十而耳顺,七十而从心所欲,不逾矩。”
③子曰:“温故而知新,可以为师。”
④子曰:“三人行必有我师焉;择其善者而从之,其不善者而改之。”
⑤子曰:“饭疏食饮水,曲肱而枕之,乐亦在其中矣。不义而富且贵,于我如浮云。”
—It _____be him. He has gone to HongKong.