Select all that apply. Which sentences use a standard modal form for an open future possibility?
The comet may brighten enough for binoculars next month.✓Respuesta correcta
The reclaimed timber may to become shelving after extensive kiln drying.
The replacement battery might last through the field survey.✓Respuesta correcta
The clay sculpture could crack while it dries.✓Respuesta correcta
Explicación
The comet, battery, and sculpture sentences use may, might, and could with bare verbs to keep future outcomes open. May to become is structurally wrong because a core modal does not take a to-infinitive.