There is a wire on the floor. - You might trip over it., A can of paint has spilled on the floor. - You might slip and fall., There are too many boxes on a high shelf. - They might fall on someone., A large knife has been left on a worktable. - You might cut yourself with it., Workers are using a table saw without goggles. - They might injure their eyes., A worker using a machine has loose clothing. - It might get caught in the machine.,

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