To give somebody a black look

[Hung]

Test No. incompl/inter-2 "Like a red rag", question 10

I know he doesn't like you because the moment you came in the room I saw him give you a ......... look.

(a) red
(b) blue
(c) white
(d) black

Test No. incompl/inter-2 "Like a red rag", answer 10

I know he doesn't like you because the moment you came in the room I saw him give you a black look.

Correct answer: (d) black

Your answer was: incorrect
I know he doesn't like you because the moment you came in the room I saw him give you a white look.
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What does "white look" mean, please

[Alan]

As far as I know, white look doesn't exist but give someone a black look means show your disapproval.
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English as a Second Language
You can read my ESL story Present Simple