When _____ about one of the biggest concerns today, many citizens mentioned the sharp rise in housing price.
A. askingB. to ask
C. askedD. having asked
It was a _______story, and we all got ________.
A. shocking; shocking B. shocked; shocked
C. shocking; shocked D. shocked; shocking
--- Hey, Mary, your backpack looks nice. When did you buy it.
--- I ____ it for two weeks.
A. had B. bought
C. have had D. have bought
The snowstorm ________ our difficulties.
A. added to B. added up
C. added up to D. has added
．Why do you insist on buying a car ______ you have such good public transportation here?
A. because B. unless
C. when D. though
Thomas wants to know ______Nina lives.
A. where B. who
C. what D. if
