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Correct Answer: D) Prohibition.
Correct Answer: A) Must.
Correct Answer: A) Shouldn't.
Correct Answer: B) My friends have to do the oral exercise quickly.
Correct Answer: B) Should.
Correct Answer: C) Would you mind closing the window?.
Correct Answer: A) Might be finishing.
Correct Answer: B) You should turn off your cellphone.
Correct Answer: A) Can.
Correct Answer: A) Should.
Correct Answer: D) COULD.
Correct Answer: C) Don't have to.
Correct Answer: C) Without.
Correct Answer: A) May I take your phone please?.
Correct Answer: B) Mustn't.
Correct Answer: B) No obligation.
Correct Answer: B) I'm sure you didn't enjoy it!.
Correct Answer: C) May not.
Correct Answer: B) Shouldn't.
Correct Answer: B) WRONG.
Correct Answer: C) Should.
Correct Answer: C) May.
Correct Answer: D) Needn't have spent.