all correct
You got 4 correct out of 4.
:D
1. My friend, Liliana, was angry, because the _________ left her restaurant without paying for their food. 
    customers
    clients
2. Being a ________ at the Apple store feels like being a sheep waiting to be killed.
    customer
    client
3. The lawyer took her ________ to a very expensive restaurant.
    customer
    client
We said that restaurants have customers, but the client here "belongs" to the lawyer, not the restaurant, so we use the word 'client'.
4. I am trying to find a new doctor, but all the doctors I have spoken to are not taking any new ________.
    customers
    clients
    patients
    students
    advice
 
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