Something that is a ________ is a complete failure.

A ________ is a legal document. If you get a ________ for an invention, no one else is allowed to make or sell it.

________ are the engines that make a train go forward.

If something ________, it worked in a rough or uneven way and made popping noises.

A ________ is a machine that plays recorded music or sound.

If a machine ________ along, it moved slowly and noisily.

Something that is ________ gives off a lot of light.

________ are small, specialized machines or electronic devices.