Most scientists agree that global warming is___serious that all of us should pay attention to it all the time
| A．such |
| B．very |
| C．so |
| D．too |
Immediate action must be________before it is too late.
| A．done |
| B．taken |
| C．used |
| D．accepted |
According to the shopping list，________a dozen socks.
| A．there seem to be |
| B．there seems to be |
| C．there seem to have |
| D．it seems to be |
Seeing the sun________above the surface of the sea, we let out a shout of joy.
| A．to rise |
| B．to raise |
| C．rising |
| D．raising |
He________that he could finish the job without any help.
| A．claimed |
| B．required |
| C．demanded |
| D．asked |
We heard an explosion and________for cover.
| A．hid |
| B．dived |
| C．walked |
| D．found |