1. Are there any volunteers who can recite all the sentences on the page?
2. Are there any volunteers that can recite all the sentences on the page?
(Are both OK? Do we have to use 'who' or 'that' in the sentences?)
"Who" refers to a person. "That" refers to an object, a thing. It's a common mistake to say,"...volunteers that can...", but it's wrong.posted by Reed
Reed is right. Use "who" because you're referring to people.posted by Writeacher