Whether ways will be found to stop pollution or not is just___________ worries the public.
| A．why | B．which | C．that | D．what |
The party last night was ____great success. We sang and danced until it came to __end at 12.
| A．the; the | B．/; an | C．a; an | D．a; the |
31.By the time we _____the airport, the plane_____.
| A．arrived at; had taken off | B．had got to; took off |
| C．got to; had taken away | D．arrived at ; had taken away |
30. Because of the heavy snow, a serious accident______to the family.
| A．occurred | B．happened | C．was happened | D．took place |
29.It was _____he said ____disappointed me.
| A．What; that | B．that; that | C．what; what | D．that;what |
28.Do you want to play ____football with us?
No, I’d like to play_____guitar.
| A．the ; the | B．/;the | C．the; / | D．/;/ |