Some passers-by witnessed the car accident____ five passengers were killed, a baby included.
| A．that | B．which | C．in which | D．in that |
_______ is our belief that improvements in health care will lead to a stronger, more prosperous economy.
| A．As | B．That | C．This | D．It |
As the busiest woman in Norton,she made_________her duty to look after all the other people’s affairs in that town.
| A．this | B．that | C．one | D．it |
He feltto work for human rights and progress.
| A．it his duty | B．his duty | C．that is a duty | D．that is his duty |
--- Do you like here?
---Oh, yes, the air, the weather and the way of life. Everything is so nice.
| A．this | B．there | C．that | D．it |
Is ____ necessary to complete the design before National Day?
| A．this | B．that | C．it | D．he |