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Correct Answer: A) He has to go to the police station twice a week.
Correct Answer: D) Couldn't.
Correct Answer: C) You should ask your parents for permission.
Correct Answer: D) Must have been stolen-was waiting.
Correct Answer: A) Was able to.
Correct Answer: A) Will be able.
Correct Answer: A) Must.
Correct Answer: C) Have to.
Correct Answer: B) Certainty.
Correct Answer: A) Have to.
Correct Answer: B) Must.
Correct Answer: A) The child read to can.
Correct Answer: C) A ought to.
Correct Answer: B) Ought to.
Correct Answer: A) We can't focus on our problems.
Correct Answer: D) That someone doesn't have to do something.
Correct Answer: C) Don't have to.
Correct Answer: A) Could.
Correct Answer: D) Might.
Correct Answer: C) Would.
Correct Answer: D) Have to.
Correct Answer: C) Want.
Correct Answer: A) Be.