阅读下面短文并回答问题，然后将答案写到答题卡相应的位置上，(请注意问题后面的词数要求)。
[1] As a distinguished Indian painter and author, Aabid has written around 80 books but no story so shocked him as the truth about water shortage on the planet, “A UN report says by 2025 more than 40 countries are expected to      ．That shortage of water will be the end of civilized life，”he said with great worry．
[2] One day back in 2007，he was sitting in a friend’s house and noticed a leaky tap．It bothered him．A few days later, he came across a statistic in the newspaper：a tap that drips(滴落)once every second wastes a thousand litres of water in a month．That triggered an idea．He would take a plumber(水管工)from door to door and fix taps for free every weekend.
[3] He named his Non-governmental Organization ‘Drop Dead’and created a slogan: save every drop…or drop dead．
[4] By the end of the first year，he had visited l,533 homes and fixed around 400 taps．Slowly，the news began to spread．Local newspapers began to write about Drop Dead, which caused a further flood of grateful emails and messages．Conservatively, it could be estimated that he has saved at least 5．5m litres of water till date．
[5] In the summer of 2014，the state where Aabid lives is expecting its worst drought in 40 years. Months in advance，the govemment has prepareddrought-relief packages worth millions of dollars，but Aabid sees his own approach as simple and inexpensive．“Anyone can launch a water conservation project in his or her area．It doesn’t require much funding．And most importantly, it puts the power back in our own hands，”he says．
Fill in the blank in Paragraph l with proper words．(no more than 5 words) ．
Why did Aabid take a plumber from door to door and fix taps?(no more than 6 words)
Explain the underlined sentence in aragraph 2 in English．(no more than 6 words)
What is Paragraph 4 mainly about?(no more than 10 words)
What does Aabid think of his water conservation approach?(no more than 4 words)