— What's the matter with Peter?— He was seen crying when he was coming out of the teacher’s office. He ____ by the teacher.
Scientists study ___________ human brains work to make computer.
A girl on the bus begin to sing a pop song and soon all the other students _________.
---Why were you late for school today?----It was ________ I help catch a thief on the bus.
To tell the truth, it’s the first time that I _______ western food.
I have the details _________ here in my notebook , which you can refer to.