A. is B. am C. are
A. close B. closed C. to close
A. me B. my C. mine
A. will finish B. finished C. finishes
A. know B. knowing C. to know
A. not go B. not to go C. not going
A. if B. though C. because
A. leaves B. left C. has left
A. I think so B. No, thank you C. Yes, please
A. play B. playing C. played