Shall we call it a day? (meaning of this idiom)

[Saneta]

English Grammar Tests, Elementary Level

ESL/EFL Test #251 "Modal Verbs (3)", question 4

We've worked long and hard today. ......... we call it a day?

(a) Must have
(b) Should have
(c) Shall
(d) Could have

English Grammar Tests, Elementary Level

ESL/EFL Test #251 "Modal Verbs (3)", answer 4

We've worked long and hard today. Shall we call it a day?

Correct answer: (c) Shall

Your answer was: correct
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what does the second sentence mean? to call it a day?
thank you very much :-)

[Alan]

Hi Saneta,

It's a common way of saying: Let's stop now.

Alan
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English as a Second Language
You can read my ESL story Present Simple

[Beeesneees]

It means to stop working for that particular day.
http://www.english-test.net/forum/ftopic72632.html
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"Inside every old person is a young person wondering what happened."
Terry Pratchett