find one's tongue
终于说得出话来
A:Mother shouted at me just now. I was too scared to find my tongue.
A:妈妈刚才对我大嚷，我吓得说不出话来。
B:Why? I think she is always kind to you. You must have done something wrong. What did you do?
B：怎么啦?我觉得她对你总是很和蔼的，你一定做错了事情。你做什么啦?
A:I only lost her favorite CD.
A：我只是弄丢了她最喜欢的CD光盘。