Classroom situation: before visiting a place, you ask when it opens. Practise the difference between asking the time and asking at what time.
Mini-dialogue
¿A qué hora abre?
Abre a las diez.
Try this in conversation: “¿A qué hora abre?” — “What time does it open?” Read the mini-dialogue aloud, change one detail and answer in your own words.
Try it yourself
Invent opening hours for three imaginary places. Ask questions and give the opening and closing times.