According to recent report, one of the rare animals, crocodile, will be in anger of dying out in 2020s
| A．a, / | B．/, the | C．the, / | D．the, the |
The children, ____ had played the whole day long, were worn out.
| A．all of what | B．all of which | C．all of them | D．all of whom |
As the world’s population continues to grow, the ___of food becomes more and more of a concern.
| A．worth | B．supply | C．package | D．list |
I ______ myself more-----it was a perfect day.
| A．shouldn’t have enjoyed | B．needn’t have enjoyed |
| C．wouldn’t have enjoyed | D．couldn’t have enjoyed |
Mary worked here as a ____ secretary and ended up getting a full-time job with the company.
| A．pessimistic | B．temporary | C．previous | D．cautious |
——Hey, can I ask you a favor?
----Sure, _______
| A．Here you are | B．Just as I thought |
| C．How is it going | D．What can I do for you? |