This special strain of rice makes _________ possible to produce one third more of the crop in the same fields.
The boy sat there quietly, ______ eyes were filled with tears.
Look! Here comes my English teacher, ______ a group of students.
---You know Jane? ---Yes, it was _____ I surfed the Internet last week.
---I’m wondering why the visitors chose to stay with the host family. --______ real local life.
---How'syour project work going, Jack? ---______. I'm half finished with it.