Odpowiedź:
1 assistant
2 buyer
3 cashier
4 customer
5 electrician
6 hairdresser
7 lawyer
8 librarian
9 manager
10 ... director
11 mechanic
12 optician
13 owner
14 receptionist
15 saleswoman
16 seller
17 shopper klient lub shop assistant sprzedawca
18 supervisor
19 visitor
20 waiter/ waitress kelner/ kelnerka