So suddenly _____ that the animals in the zoo looked very frightened during the total solar eclipse ( 日全食).
| A．did the sky turn dark | B．the sky did turn dark |
| C．turned the sky dark | D．was the sky turned dark |
I wanted______cold meat but there was ______ left.
| A．some more ; no one | B．any more ; nothing |
| C．much more ; neither | D．some more; none |
It is global warming, rather than other factors,_____ the extreme weather.
| A．that have led to | B．which has caused | C．which are causing | D．that has led to |
_____ the crisis of economy getting more and more serious, the government is searching for ways to improve people' s life.
| A．As | B．With | C．When | D．If |
A terrible frost hit his hometown during his sleep. The next morning he got up only .____ the outside world
| A．finding; changing | B．to find ; changed |
| C．to find ; to change | D．found ; changed |