按要求写句子。

1. Mrs Green drives to her hometown every year. (用last year替换every year)

    Mrs Green ______ to her hometown last year.

2. There were some sharks in the aquarium. (改为一般疑问句) 

    ______  there ______  sharks in the aquarium?

3. The film is very boring. (对画线部分提问) 

     ______ is the film?

4. It rained all day. (改为同义句)

    It rained ______ ______ ______.

5. They enjoyed themselves in the park last Saturday. (改为同义句)

    They ______ ______ ______ ______  in the park last Saturday.

“建设之首要在民生。故对于全国人民之食、衣、住、行四大需要，政府当与人民协力，共谋农业之发展，以足民食；共谋织造之发展，以裕民衣；建筑大计划之各式屋舍，以乐民居；修治道路、运河，以利民行。„„土地之岁收，地价之增益，公地之生产，山林川泽之息，矿产水力之利，皆为地方政府之所有，而用以经营地方人民之事业，及育幼、养老、济贫、救灾、医病与夫种种公共之需。”——摘自1924年孙中山的《建国纲领》

根据材料，归纳孙中山的民生主张，并结合所学知识概括说明孙中山实现民生主义的途径。