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Correct Answer: B) Can't.
Correct Answer: B) Has to.
Correct Answer: D) Can't.
Correct Answer: A) Ability and possibility in the past.
Correct Answer: D) Could you.
Correct Answer: B) Might.
Correct Answer: A) Can.
Correct Answer: A) Can't.
Correct Answer: C) May.
Correct Answer: E) An injection.
Correct Answer: A) Had to read.
Correct Answer: B) Should.
Correct Answer: D) Needn't.
Correct Answer: C) Don't need.
Correct Answer: B) Could.
Correct Answer: D) Must.
Correct Answer: D) Should.
Correct Answer: B) Can't have seen.
Correct Answer: D) Don't have to.
Correct Answer: C) Would.
Correct Answer: A) Should.
Correct Answer: A) Only possibility in the past.
Correct Answer: A) Had better.