what should we do to keep water clean

what should we do to keep water clean what should we do to water?还是 what will we do to water? -What should we do?-We must keep our classroom _____.A.clean we should keep the water clean(改为一般疑问句） We should keep the water clean 的汉语意思是? What should we do to keep our campus safe we should do ______(muchc)to keep our city clean please turn what should we do ____?A.to keep healthy B.to keep health C. if we don't have clean water to drink,what will you do? We should do exercise to keep h___. what should l do to keep healthy? What should you do to keep health