The clock ________ and we realized it was five o’clock.
________ 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.