We should keep in mind that the earth is our only home and only by saving the environment________ourselves.
| A．we can save | B．can we save |
| C．we must save | D．must we save |
. People used to accept a medieval world view in which human life was of little value ____ with the greatness of God.
| A．compare | B．to compare | C．compared | D．comparing |
The aim of the project is ____ patients to be more independent.
| A．help | B．to help | C．helping | D．helped |
I discovered that Lin Qiaozhi had ______ her whole life to her patients.
| A．moved | B．leaded | C．crowded | D．devoted |
Only after her mother came to help her for the first few months _____ to begin her project.
| A．she was allowed | B．was allowed she |
| C．was she allowed | D．she allowed |
_____ a family of chimps wake up is our first activity of the day.
| A．To watch | B．Watching | C．Watch | D．Watched |