[单选题]– ________ keep water running when you are brushing your teeth or washing your hands, Jack. – OK. I know we must save every drop of water.
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2023-10-01 07:58:41
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[单选题]– ________ keep water running when you are brushing your teeth or washing your hands, Jack. – OK. I know we must save every drop of water.

A.Please
B.Why not
C.Don’t
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