What does "stay dry" mean?

[Sengshu]

English Idioms and Expressions, Intermediate level

ESL/EFL Test #10 "Under my Skin", question 7

It was simply a case of running away or being killed and we decided to run to save our skins.

(a) to stay away
(b) to stay dry
(c) to stay clear
(d) to stay alive

English Idioms and Expressions, Intermediate level

ESL/EFL Test #10 "Under my Skin", answer 7

It was simply a case of running away or being killed and we decided to run to stay alive.

Correct answer: (d) to stay alive
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What does "stay dry" means?

[Mister Micawber]

.
Stay dry = not get wet (as from rain).
.
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Canadian-American native speaker
who teaches English for a living at Mister Micawber's
ESL cafe: Interview with Mr. Micawber

[Torsten]

Hi Sengshu,

In addition to Mister Micawber's explanation I'd like to point out that your question should read What does "stay dry" mean?
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Test Of English for International Communication
TOEIC Preparation & TOEIC Vocabulary