Does anyone else find it strange to say water and oil, rather than oil and water?
No!! does not seem strange
Probably because in English we like like short o sounds at the end of a phrase, like "tick tock" and "ding dong"
Only a little bit.
"Dầu ăn" is cooking oil, so missing the descriptive word "cooking" for this exercise.
It's there, probably wasn't at the time of your comment.
No, it's still not there for the word selection exercise
It was for me just now.
Unless you want to make an emulsion.