We should think of ways to stop the waste from the factory _____ our living environment.
| A．being polluted | B．polluting | C．from being polluted | D．polluted |
I'd love ___ to your party last Sunday if not because of the unexpected guests.
| A．to go | B．going | C．having gone | D．to have gone |
____ the temperature falling so rapidly, we couldn't go on with the experience.
| A．Since | B．With | C．As | D．For |
--- Do you know Uncle Tom is crazy about gardening?
---Sure. He ____ his flowers in the garden now.
| A．may be watering | B．must be watering |
| C．could look after | D．ought to watch |
He is neither______ European, nor______ American. He is from______ Australia.
| A．a; a; / | B．a; an; the | C．a; an; / | D．an; an; / |
Is there a bookshop around ______ I can buy an English and Chinese dictionary?
| A．which | B．where | C．that | D．what |