It is well known that biology is ______ science about living things.
| A．a |
| B．the |
| C．/ |
| D．an |
Imagine ______: you have been admitted to one of the top universities in China ahead of time. How do you feel?
| A．this | B．that | C．it | D．one |
“Do you expect there _____ a possibility that we shall be able to afford the cottage?” the newly-married wife asked her husband?
| A．to be | B．be | C．being | D．been |
China's GDP grew by 7.1 percent in the first half of this year, _______ proved its proactive macro-economic policies were effective
| A．it | B．that | C．what | D．which |
Female soldiers cried ______they left their drill camps on the outskirts of Beijing on October 5, 2009.
| A．while | B．before | C．until | D．as |
On rainy days, accidents______ happen sometimes on steep roads.
| A．should | B．might | C．must | D．can |