In general directions, such as recipes, the command form of the verb is generally in the form.

B) hay que
i’m a spanish native speaker hopes this you : )

No sé que te dierano sé que te diera,por una mirada, el mundo,por una sonrisa, el cielo,por un beso,ay, no sé que te diera por un beso.veo la lunaveo la luna y la luna ve a mí,que dios bendiga la lunafound the answer in that link. if its wrong just delete my answer so you get your points bck.