Then sit silent and wait for their answer.
If you were stranded on an island, what is one item you would take with you?
What was the first album you bought, and why did you buy it?
Ask one of the lighter questions and follow that path until you get to a point where you can ask more serious ones.
In one sentence what is your biggest concern right now?
Anyway, the questions these dating sites ask are helpful when trying to find a date, and when you're thinking of starting a long-term relationship.
If you could live in any city, which would you choose?
Do you consider yourself to be a good person?