Our bad living habits will destroy the earth．Only by changing ______ we live can we save the earth．
| A．that | B．what | C．how | D．where |
--- When did you go out for the newspaper?
--- 10 minutes ago. You the flowers in the garden.
| A．have watered | B．were watering | C．watered | D．had watered |
A new city will be set up was a wasteland after the earthquake.
| A．in what | B．where | C．in which | D．there |
Would you please keep silent? The weather report and I want to listen.
| A．is broadcast | B．is being broadcast |
| C．has been broadcast | D．had been broadcast |
Doctors say that exercise is important for health, but it must be exercise.
| A．frequent | B．normal | C．regular | D．usual |
What do you think of the suggestion we organize a football club?
| A．which | B．whether | C．that | D．what |