一道数学加几道英语。。答题有赏

Question

1.I ____never_____(eat)such delicious noodles before.2.I_____(give)this letter to my father when he _____(come)back tomorrow.3.Tom won't visit the farm. He 'll stay at home .[保持原句义] Tom will stay at home _____ _____ visiting the farm.4.某市今年1月1日调整居民用水价格， 每立方米上涨25%，小明家去年12月份的水费是18，而今年5月份的水费是36元。已知小明家今年5月份的用水量比去年12月份多6立方米，求该市今年居民用水的价格。【该题要有过程】

Answer 1

1.I have never eaten such delicious noodles before.2.I will give this letter to my father when he comes back tomorrow.3.Tom won't visit the farm. He 'll stay at home .[保持原句义] Tom will stay at home but for visiting the farm.4.解：设今年水费价格a元/立方米，今年5月份用水b立方米
则去年每立方米水费a/(1+25%)=4/5a
去年12月份用水b-6立方米
4a/5×（b-6）=18（1）
ab=36（2）
由（1）ab-6a=22.5将（2）代入
36-6a=22.5
a=2.25元
今年水费2.25元/立方米

Answer 2

1.have eaten 2.will give comes 3.instead of

Answer 3

你好猥琐

Answer 4

想几道就几道