What does gride and broom mean?

[Godi]

English Language Tests, Intermediate level

ESL/EFL Test #305 "English Slang Idioms (27)", question 1

"Alright, sir. You've paid your bill in full. We're all ......... now," the representative told Jim.

(a) square
(b) round
(c) exact
(d) important

English Language Tests, Intermediate level

ESL/EFL Test #305 "English Slang Idioms (27)", answer 1

"Alright, sir. You've paid your bill in full. We're all square now," the representative told Jim.

Correct answer: (a) square
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funny or sarcastic names for bride and groom

[Mister Micawber]

gride and broom
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Native English teacher at Mister Micawber's

[Kitosdad]

Peter and Jordan.
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Englishman living in Germany.