—I didn't go to work yesterday afternoon because my car broke down. —You ___ mine. I wasn't using it.
—I’m sorry, sir. I didn’t mean to hurt you by showing you those pictures.—________ It just reminded me of my old friends.
On feeling the earthquake,the teacher stayed calm in the front of the classroom,________ all the students to rush out of the classroom as quickly as possible.
I can never forget the day ________ we worked together and the day ________ we spent together.
The families of the trapped miners’ are ________ to get any information about their relatives from the rescuing center.
Don't bother Tom. He is ________ with the experiment on water molecules(分子)in the lab.