Idiom: "at the back of my mind"

English Language Proficiency Tests, Advanced Level

ESL/EFL Test #68 [color=blue]“Back Again”, question 1

I’m suspicious really because at the back of my I don’t trust them.

(a) brain
(b) mind
© idea
(d) thought

English Language Proficiency Tests, Advanced Level

ESL/EFL Test #68 [color=blue]“Back Again”, answer 1

I’m suspicious really because at the back of my mind I don’t trust them.

Correct answer: (b) mind
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I can’t understand what does it mean-at/ in the back of your mind?

Hi teodora65

Something that is “in/at the back of your mind” is something that is understood or known, but is not something you think about actively.

Amy