–______ keep water running when you are brushing your teeth or washing your hands, Jack.
– OK. I know we must save every drop(滴) of water.
A. Why not B. Please C. Don’t
– By the end of this year, China’s state and provincial (省的) libraries will be free to the public.
–That’s _______ good news for those who often go to these places.
A. a B. the C. 不填