Not until I began to work __ how difficult it was.
A.I knew
B.I did know
C.did I know
We are happy that the 2008 Olympic Games __ in Beijing.
A.will be held
B.will hold
C.hold
According to the professor, why is chemistry sometimes called the central science?
A.Chemistry courses are the most difficult.
B.Chemical processes occur all around us.
C.Chemistry students have high status.
D.Chemists study how to control diseases.
听力原文:M: I just went to watch the sunrise at the seaside.
W: Why didn't you tell me? It's five years since I last saw it.
What do we know about the woman?
A.She has never seen a sunrise.
B.She wants to watch the sunrise again.
C.She went to the seaside with the man.
Sally wants to become a singer when she __ up.
A.grows
B.grew
C.will grow
The word which in the passage refers to
A.tale
B.Scandinavia
C.manuscripts
D.Old English