What is this "d" of " How'd"?
I found the sentence as follows," So how'd your placement test go?"In this case, is " how'd " abbreviated " how would " or " " how had"?I always use " How was your test "Whats the difference between them?

Question

What is this "d" of " How'd"?
I found the sentence as follows," So how'd your placement test go?"In this case, is " how'd " abbreviated " how would " or " " how had"?I always use " How was your  test "Whats the difference between  them?

Answer

Hello. "How'd" is short for "How did"
for example "How'd you do that" "How did you do that"

Answer

“How’d” is an abbreviation of “How did” such as “How did your test go?”

“How was your test?” has the same meaning.