" "Did copy" is one verb and "did post" is the other. When the single "did" distributes to two different verbs, they must be in the same form. ( base form , in this case) Prosecutors often repeat the "did" to trick you into confessing to both actions: Did you take her home and did you stab her to death?
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Anonymous"Did you just copy a comment and posted it?""Did copy" is one verb and "did post" is the other.
or
"Did you just copy a comment and post it?"
Anonymous*whichThe second one. (The one in which both verbs are in the base form.)
AnonymousWhen you use did, all the verbs in one sentence turn into present simple or just the verb "closer" to it?Both do.