Which is correct?
- I bought some beef and pork. All of it looks fresh.
- I bought some beef and pork. All of them look fresh.
Since both "beef" and "pork" are uncountable nouns, I think the we should use the pronoun "it" to replace "beef and pork."
However, when it comes to the following sentence, I think we should consider them as plural to make the subject agree with the verb. And that makes me confused.
- Beef and pork are expensive.