单项选择题

A decision must be （）immediately（）stop the factory（）waste water without being treated.

A. made, to, pouring
B. made,不填, to pour
C. done,不填, pouring
D. had, to, to pour

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—I am not quite myself today. —（）go and see a doctor

A. Why don't
B. Why not
C. Why you
D. Better to
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Mary （）her keys in her office and she had to （）out of the house.

A. forgot, keep
B. forget, keep
C. left, be kept
D. leaved, be kept
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