Can we say 'the mail looked sweet'?

[Sweaty]

English Language Tests, Intermediate level

ESL/EFL Test #646 "English Slang Idioms (388)", question 1

"I had to work overtime last night because there was a shoot ......... at the Delray Bar. It took a couple of hours to arrest everyone and collect the weapons, so I didn't get home until three a.m.," Detective Wilson told Detective Simon.

(a) down
(b) off
(c) athon
(d) out

English Language Tests, Intermediate level

ESL/EFL Test #646 "English Slang Idioms (388)", answer 1

"I had to work overtime last night because there was a shoot out at the Delray Bar. It took a couple of hours to arrest everyone and collect the weapons, so I didn't get home until three a.m.," Detective Wilson told Detective Simon.

Correct answer: (d) out
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can we say the mail looked sweet

[Mister Micawber]

.
Not if you expect anyone to understand it.
.
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Native English teacher at Mister Micawber's