—What are you mailing, Tom? — A textbook a new method of teaching physics. I want my friends to take a look at it.
________ deep down in the earth,the dead forests rotted away and became coal.
—What happened to the priceless works of art? —________.
—What happened? —Oh,a bee appeared on Kate’s dress,and her sudden________ of cry scared us.
________our earth,or else it will be no longer fit for us to live on.
—Look!He’s running so fast! —Hard to________his legs were once broken.