The Allen and Greenough is still under construction;
so some links may not work quite the way you would expect.
337. In answering a double question, one member of
the alternative, or some part of it, must be repeated: -
- vidisti an de audito nuntias? - egomet
vidi (Plaut. Merc. 902), did you see it or are you repeating
something you have heard? - I saw it myself.