Put your foot down

Test No. [color=blue]incompl/inter-25 “Wrapped round her finger”, question 5

Don’t you think it’s about time you put your down and told them what you really think?

(a) finger
(b) hand
© head
(d) foot

Test No. [color=blue]incompl/inter-25 “Wrapped round her finger”, answer 5

Don’t you think it’s about time you put your foot down and told them what you really think?

Correct answer: (d) foot

Your answer was: [color=green]correct
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may I also say put my feet down?

No, always singular