답변을 얻은 뒤 반드시 감사의 덧글을 남기고, 좋은 답변은 채택해 주시는 센스...
질문할 때 예의를 지키시기 바랍니다.(빨리... 고수분만..... 이런 식의 요구는 자제 바랍니다.)
질문 내용 :

고2 금성 교과서 본문 어법 변형문제입니다.
다음 두 문제의 어법상 어색한 것이 1번은 1번, 2번은 5번이라고 되어있는데요 저는 아무리 봐도 답이 없는 것 같습니다.고수님들은 어떻게 생각하시나요? 도와주세용~^^

1. Today, there are many different types and flavors of tea, but the rules of making the perfect pot of tea are likely very similar to ①that used by its Chinese inventors in the days of Emperor Shen Nung. Use loose leaf tea ②that has been carefully stored. Fill the kettle with freshly drawn cold water and bring it ③to a boil. The best type of water to use when ④brewing tea is filtered or bottled water that is free of chemicals. Use 1 teaspoon of whole leaf tea for each 6 ounce cup. If you are brewing tea that has a lof of volume, consider ⑤using up to two tablespoons per serving.
-1번의 that은 바로 앞, but 이하의 주어를 that으로 대신하여 받은 구조 아닌가요? be similar to명사....해서 that이 나오기에도 적절할것 같구요.
2. This water scarcity has led some economists and environmentalists to suggest that people ①pay a true price for water. They hope a price increase will force us into conserving water. But if water ②is treated a commodity, instead of human right, it could become a serious problem for those ③living in poverty. For example in Bolivia in 2000, privatization tripled the price of water, ④causing a water war leading to dozens of deaths as people took to the streets to protest. Already it is the poor ⑤who pay the most for water. In Delhi, India, Vendors charge the poor US $4.89 per cubic water, while families with piped connections pay just US $0.01, says a UN report.
- it~ that강조용법에서 강조하고자 하는 것이 사람이면 that 대신 who를 사용해도 되는것으로 알고있습니다만... 제가 못보는 어법상 오류가 있다면 코멘트 부탁드립니다~