1.others are expected to make the switch to cola from the usual pesticides as word spreads about new spray.
2. ....., which he was applied this year to several acresof cotton.
3. the dumping of solid waste, including wastewatersludge, industrial waste, and high-level radioactive waster were commom.
에서 1번 밑줄 부분 해석과 2번에서 which 뒤에 완벽한것 같은데 which가 가능한가요?
3번에서 were가 아니라 was 아닌가요...?