What does this phrase mean: 'turn it in'? Is it an idiom?

[Rich7]

Test No. incompl/inter-33 "Story (2)", question 6

The waiting was done by me and Doris, who should have turned it ......... years ago and by rights have been a guest herself because of the great age.

(a) to
(b) away
(c) into
(d) in

Test No. incompl/inter-33 "Story (2)", answer 6

The waiting was done by me and Doris, who should have turned it in years ago and by rights have been a guest herself because of the great age.

Correct answer: (d) in

Your answer was: incorrect
The waiting was done by me and Doris, who should have turned it into years ago and by rights have been a guest herself because of the great age.
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I do not get it?

the whole sentence?
_________________
I should have been born in the USA.
I've got this thing about America.

[Alan]

This means stop working/stop doing something often because you have had enough or you're too old to carry on.
_________________
English as a Second Language
You can read my ESL story Present Simple

[Rich7]

In this case you mean: stop waiting, or retire from work?
_________________
I should have been born in the USA.
I've got this thing about America.

[Alan]

Both, that is stop waiting because waiting was her job and so she would also retire.
_________________
English as a Foreign Language
You can read my EFL story If you vote

[Rich7]

I had confused it with the verb await, but you mean being a waiter.

THese last tests have almost got me.
_________________
I should have been born in the USA.
I've got this thing about America.

[Mudium]

hi
' who should have turned it in years ago and by rights have been a guest herself'
please explain it in simple words
jyo

[Yankee]

I'm totally in the dark here, too.

Alan, are you saying that 'turn it in' is an idiom used in British English meaning 'to retire' (or 'stop doing')? Is the expression always/only used with the word 'it'? Is this a frequently used expression in the UK?
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[MrPedantic]

I don't know "turn it in", for "to retire"; only for "to hand over". "Pack it in" or "chuck it in" would work.

This part doesn't seem quite right:

[Yankee]

Thanks for the input, MrP.

Yes, 'packed it in' is used on this side of the pond too, and it would also fit the context in the test sentence.

The expression 'chuck it in' would usually pretty literally mean 'throw something in (to something) -- in my neck of the woods.
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