Frightened, Lucy looked back over her shoulder _____ what was coming towards her.
A. seeing B. saw C. to see D. seen
Car drivers can take a subway into the city center ______ cars always get stuck in the traffic jams.
A. which B. what C. where D. when
______ how close she was standing to the railway tracks, the girl was hit by the train and died on the spot.
A. Having not realized B. Not having realized
C. Not realizing D. Not to realize
--- Argon, can I borrow your textbook?
--- Sorry, not _____ you help make a note of what the teacher says.
A. unless B. if C. when D. since
The failure to _____ the basic values and laws of a country harms the survival of its democracy (民主).
A. ban B. reduce C. replace D. observe
Although many directors are _____ with the rise in China's movie industry, they have voiced concerns about possible bubbles (泡沫) in it.
A. disappointed B. delighted
C. bored D. annoyed
