The rare animals would die _______ if men were allowed to shoot as many as they wished.
| A．out | B．up | C．down | D．away |
_____is known to us all is that we should do as much as we can ______ stop the pollution of the environment.
| A．It; help | B．What; to help | C．As ; to help | D．That ; help |
If he_____his teacher' s advice, Asafa Powell would not be the fastest man in the world.
| A．didn't follow | B．wouldn't have followed |
| C．hadn' t followed | D．hasn' t followed |
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 |