MUST - Students _________ study for final exams, SHOULD - If it hurts badly you __________ go to the doctor, COULD - I ________ stay awake until late night when I was younger, HAVE TO - Joseph _______ prepare all the packets for tomorrow, MIGHT - It __________ rain tomorrow but I'm not sure, CAN'T - Theres a mistake here I'm sure, this ________ be right, HAVE TO negative - She _______ smoke so much it's so bad for her.,

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