What adverb should I add?

[Steven Mai]

Hi All, I have some difficulties of using adverb of time, could you please help me?
So, here are the situations:
1. Let's say my friend said something to me in a rush which I did not hear it clearly, and then he is gone.We met an hour later, and I said: What did you say ...... ( Here is the problem, what adverb should I add here? I searched the dictionary, the word matches with the one in my mother tongue is "Just now", but I found it weird to add "just now" here)
2. Let's say A B and C went shopping, and they got to the cash counter ( I am not sure if this word is correct, I mean the place where we pay for stuffs we buy in supermarket), they went to different counters, and A finished first, followed by C, then it is B. if I said, C is the one who get finished ...... B ( What should I add? I think I should add "before", but are there any other one is exchangeable?
Many thanks in advance for your help.

[tedtmc]

not a teacher

1. What did you say earlier/just now/an hour ago?

2. The place where you make payment is called the cashier counter.
C got through the cashier counter earlier than/more quickly than/before B.

[Steven Mai]

not a teacher

1. What did you say earlier/just now/an hour ago?

2. The place where you make payment is called the cashier counter.
C got through the cashier counter earlier than/more quickly than/before B.

Thank you so much

[bhaisahab]

In English we call the place where you pay in a supermarket "the checkout".

[Rover_KE]

Thank you so much

Your thanks are appreciated, Steven Mai, but you don't need to send them in a separate post, and there's no need to quote our replies back to us.

We are all happy to accept a simple click on the Like button as your acknowledgement of our help.

Rover

[emsr2d2]

I call the place where I pay at a supermarket simply "the till". Even though that technically refers to the piece of equipment, you will hear a lot of people say "OK, are you ready to go to the till now?" or "Please come to till number 7".