______ he has made up his mind, no one can make him change it.
| A．Once | B．Unless | C．Until | D．As |
One thousand dollars a month is not a fortune but would help cover my living _______.
| A．bills | B．expenses | C．prices | D．charges |
The top leaders of the two countries are holding talks in a friendly________.
| A．atmosphere | B．state | C．situation | D．phenomenon |
Dogs have a very good ______ of smell and are often used to search for survivors in an earthquake.
| A．sense | B．view | C．means | D．idea |
To save some of the human languages before they are forgotten, the students in our school started a discussion “Save Our ________”
| A．Sky | B．Life | C．Arts | D．Voices |
In a time of social reform, people’s state of mind tends to keep _______ with the rapid changes of society.
| A．terms | B．pace | C．progress | D．touch |