Question

---Don’t forget ______ your homework. John.
---Ok. I'll do it right now

1. A.
   doing
2. B.
   do
3. C.
   to do

Answer 1

C
词义辨析。forget to do sth. 忘记做某事(将要做的事)；forget doing sth. 忘记做某事(已经做过的事) 根据句意：不要忘记做作业。好的，我马上就做。选C。