A: I finally got my wallet.
B: Oh. Where did you find it?
A: It was under the bed.
B: It sounds strange. How did it go there?
A: I also don't know how it went there.
Are they correct?
Is "How did it go there?" a possible expression here?
kumenglishIs "How did it go there?" a possible expression here?
No. You need to say 'get' instead of 'go' and 'got' instead of 'went'.
kumenglishHow did it get there?
I don't know how it got there.
In this context 'end up' and 'ended up' also works, as shown below.
kumenglishHow did it end up there?
I don't know how it ended up there.
CJ
kumenglishA: I finally got my wallet.
That sounds like there was a delay at Amazon. You want "I finally found my wallet."
kumenglishIt sounds strange.
"It" is unidiomatic there. You want "That's strange."