_______ leave! We haven't finished yet.
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_______ careful! You almost spilled coffee on me.
A. Being
Be
C. Not be
_______ this medicine before you go to bed, OK?
A. Taking
B. To take
C. Take
_______ warmly and you won't catch a cold.
A. Dress
B. To dress
C. Don't dress
_______ interrupt me when I am speaking, It's rude.
A. Please
B. Please not
C. Please don't