If we (know) who he was, we (invite) him to speak at our meeting.

I can understand what it's written but what is the question first write question then ask questions okie just tell question

knew

would have invited

Explanation:

was is in the past tense, so we need to use the past tense for the verbs "know" and "invite".

Excellent. The past tense of know is "knew" and the past tense of invite is "invited".

Careful! For invited, we have to use "would have invited" because the statement makes it seem like they did not invite him to speak at their meeting (i.e. the "if we knew").

Hope this helps!

can you explain your question better