Question

Is is correct to say i couldnt stand on my knees?

Answer 1

Answer:

weak at the knees. If you go weak at the knees, you lose your strength and feel you are going to fall over, usually because of seeing or talking about either someone you are very attracted to or because of something unpleasant or frightening: The thought of kissing him made me go weak at the knees.

Explanation:

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Answer 2

it is correct if he can't then only