faced with threat of water shortage,people are learning to save water

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• 用所给首字母填空如题 The world is now using 10 times as much water as it did 100 years ago.Scientists say that by 2020 water shortage will be a big world problem.It's time for all of us to learn to s___ it.People use more water in the bathroom t___ any other place in the home.Turn off the water when you brush your teeth.Keep your showers s___ as a shower uses 10 to 20 liters of water a minute .This way you'll save thousands of liters of water a year,and reduce
• faced with threat of water shortage,people are learning to save water答案是faced怎么不是facing阿面对,不是主动?
• faced with threat of water shortage,people are learning to save water
• 一道高中英语时态题China _____ from a continuous drought.More than 10 million people _____ drinking water shortage since mid-April,a top Chinese official said on Sunday.A.is suffering,have facedB.was suffering,had faced为何不选B?题中不是有said提示了吗?
• 圆O的半径OA、OB与弦CD分别相交于E、F,且CE=CF,求证：OE=OF;AC=BD
• People in this area will have no water to drink and to water their crops if the government____the