They ended their relationship

[Sandeep]

Test No. incompl/elem-5 "Finish/End", question 10

To most people it seemed like a long and successful relationship and so it was a great surprise to learn that they had ......... with each other.

(a) ends
(b) ended
(c) finishes
(d) finished

Test No. incompl/elem-5 "Finish/End", answer 10

To most people it seemed like a long and successful relationship and so it was a great surprise to learn that they had finished with each other.

Correct answer: (d) finished

Your answer was: incorrect
To most people it seemed like a long and successful relationship and so it was a great surprise to learn that they had ended with each other.
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WHEN IT IS DEALT WITH RELATIONSHIP PLEASE SUGGEST TO USE THE WORD FINISH OR END?

[Torsten]

Well,

It depends whether or not you combine the verb with an object. For example, you can say They ended their relationship. So, you can use finish as well as end when you describe a relationship.

TOEIC listening, photographs: Out for a walk