Expression: I feel like taking the air at the moment

[MilkyWay]

English Language Proficiency Tests, Advanced Level

ESL/EFL Test #409 "Air Idioms", question 4

I don't know about you but I feel like taking the air at the moment -- means: ..........

(a) going shopping
(b) going for a walk
(c) going for a drink
(d) going to eat

English Language Proficiency Tests, Advanced Level

ESL/EFL Test #409 "Air Idioms", answer 4

I don't know about you but I feel like taking the air at the moment -- means: going for a walk.

Correct answer: (b) going for a walk
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really, i dont understand about this qustion. can you explain to me?

MilkyWay