Duong: We need to go shopping.
       We are out of everything. 
Minh:  You’re right. Let’s make
       a shopping list.
Duong: Well, I know we need ground beef.
Minh:  That’s not all. We really need
       carrots and tomatoes, too.
Duong: OK, I’ll write that down—carrots
       and tomatoes. 
Minh:  Let’s buy some soda, too. 
Duong: OK, I’ll add it to the list.
Minh:  Wow! Avocados are expensive.
       Let’s just buy two. 
Duong: OK, two it is. Anything else?
Minh:  No, I think that is it.
Duong: OK. I have ground beef, carrots,
       tomatoes, soda, and avocados
       on the list.