Or simply: What do you recommend?1) Can you please make a recommendation on/about what to order? I would say "about."
2) One of server's duty is to make food recommendation to customer. One of a server's duties is to make food recommendations to customers.
Thanks for pointing out the mistakes I've made and correcting them for me.
If you have a question about the English language and would like to ask one of our many English teachers and language experts, please click the button below to let us know: