Don't take any aspirins. You mustn't take any aspirins#
Don't take this medicine. He mustn't take this medicine.#
Don't call the doctor. She mustn't call the doctor.#
Don't play with matches. He mustn't play with matches.#
Don't talk in the library. They mustn't talk in the library.#
Don't make a noise. We mustn't make any noise.#
Don't drive so quickly. He mustn't drive so quickly.#
Don't lean out of the window. They mustn't lean out of the window.#
Don't break the vase. He mustn't break that vase.&