Li Ling was a diligent boy . He ____ go to school though it was raining hard .
| A．was able to | B．could | C．couldn''t | D．wasn''t able to |
_____ ashes from the volcano in Iceland have caused problems for air traffic and business, scientists don't think it will have long-term effects on human health.
| A．Since | B．As | C．While | D．Because |
_____relieved the people most was that it wasn’t long _____the victims in the earthquake were saved by the soldiers.
| A．What…that | B．What…before |
| C．What…since | D．That… before |
Then ____ a foreign delegation would come to our school.
| A．the news that | B．came the news that |
| C．did the news come | D．came the news which |
. The post-Expo fate of foreign pavilions, especially those _____ tens of millions of dollars, has aroused strong interest among the public.
| A．cost | B．costing | C．having costed | D．costed |
______abroad for a tour can be a worthwhile experience to a senior high student.
| A．Taking | B．Taken |
| C．Being taken | D．Having been taken |