There are two really easy ways:
1. if you are a girl and you have lots of boys following you, you just post a hot picture and you get tons of likes and comments
2. and for everyone else just use general questions but be genuinely interested. The trick is to get others involved. and what is better then to ask people questions about what THEY think.
so if you want to watch a movie tonight. say “what movie could you recommend to me tonight?” or “any ideas for a healthy lunch?” it should be interesting to at least 90% of your followers.