After going into the concert hall, the mother _____ a friend and went over to greet him.

All of us still remember the terrible earthquake that______Tangshan twenty years ago.

 I don’t know why he ________ in the middle of a sentence.

 ---This is the seat for the disabled.--- Oh, sorry. I ____________ that.

He was a bit nervous. He _________his spare breath with a soft sound that was almost heard by the audience.