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Correct Answer: B) Should.
Correct Answer: C) Can't.
Correct Answer: B) Probability.
Correct Answer: A) Needs to.
Correct Answer: B) Will.
Correct Answer: B) Certainty.
Correct Answer: B) Mustn't.
Correct Answer: A) Can.
Correct Answer: B) COULD.
Correct Answer: A) Should.
Correct Answer: C) May.
Correct Answer: D) May.
Correct Answer: A) Must.
Correct Answer: C) Had to.
Correct Answer: B) May.
Correct Answer: A) Has to.
Correct Answer: D) Should / leave.
Correct Answer: A) Needn't have.
Correct Answer: B) Can't go.
Correct Answer: D) Can't.
Correct Answer: B) Shouldn't have.
Correct Answer: C) Could.
Correct Answer: C) Needn't.