Answer: B) Have been.
Explanation for this question is being written.
Answer: B) Could have.
Answer: D) Helped
Answer: A) Couldn't
Answer: A) Could
Answer: D) He could have gotten a good grade.
Answer: A) Ww
Answer: D) Could have-shouldn't have.
Answer: A) Could have been.
Answer: A) Could have become.
Answer: B) Could have got.
Answer: B) Could
Answer: A) Could be filed.
Answer: B) Could have gone.
Answer: B) Couldn't have.
Answer: C) COULD HAVE.
Answer: A) Could have finished.
Answer: A) Could have.
Answer: C) Could
Answer: B) Couldn't
Answer: A) He thinks he could of saved his sister when he was a baby but he did not.
Answer: C) Spoken, talked.
Answer: C) Couldn't have seen.
Answer: D) Would have.
Answer: A) Ability
Answer: C) CALLED
Answer: A) Could have taken.
Answer: C) Cannot have closed.
Answer: B) TO DRINK.
Answer: A) RIGHT
Answer: C) Could have ever.
Answer: B) Tina can't have stolen the money.
Answer: D) Could have looked.
Answer: B) Have known.
Answer: C) Sam and Ginny can't have got lost.
Answer: A) Could have called.
Answer: B) I didn't go to the gym.
Answer: C) Could have.
Answer: D) Could
Answer: B) Have
Answer: C) Could not have been.
Answer: B) I'It's possible that he went home early.
Answer: A) Could go.
Answer: B) B could have.
Answer: C) Can't have forgotten.
Answer: A) You could have won.
Answer: A) Could have had.
Answer: A) Visited
Answer: B) Could have been.
Answer: A) True