问题描述：
1.if we do not save every drop of water ,we will be s_ of water some day
2.he had nothing to drink so i o_ a glass of milk to him 3.他以前从未见过这么漂亮的鸟he_ _ _such_ _bird befors 4.发展中国家的人口比发达国家的人口要多得多the_countries have much _ peopie than the _countries
2.he had nothing to drink so i o_ a glass of milk to him 3.他以前从未见过这么漂亮的鸟he_ _ _such_ _bird befors 4.发展中国家的人口比发达国家的人口要多得多the_countries have much _ peopie than the _countries
问题解答：
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