.Was it______ it snowed last night that you didn’t come?
| A．that | B．because | C．why | D．if |
If we leave right away, ____we’ll arrive on time.
| A．hopefully | B．curiously | C．occasionally | D．gradually |
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 |