More and more people have come to realize that if we had taken effective measures much earlier, the air quality ______ so seriously now.
| A．is not polluted | B．would not be polluted |
| C．had not been polluted | D．would not have been polluted |
Now that we've discussed our problem, are people happy with the decisions?
| A． | taking | B． | take | C． | taken | D． | to take |
Everybody was touched _____ words after they heard her moving story. 
| A．beyond | B．without | C．of | D．in |
One of the most important questions they had to consider was _____ of public health. 
| A．what | B．this |
C．that | D．which |
Encourage your children to try new things, but try not to ___ them too hard.
| A．draw | B．strike | C．rush | D．push |
The computer was used in teaching. As a result, not only, but students became more interested in the lessons.
| A． | saved was teachers' energy | B． | was teachers' energy saved  |
C． | teachers' energy was saved | D． | was saved teachers' energy |