2012.128.It is a fact _______ most deaths from lung cancer are caused by smoking.
A. that
B. how
C. what
D. which
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2012.127.Could you please _______ why you can't come to attend the meeting?
A. explain
B. understand
C. give
D. reach
2013.68.John decided to _______ the present job in order to travel around the world.
A. give up
B. put up
C. wake up
D. break up
2013.63.The business talk ______ next week when the CEO of your company comes.
A. was held
B. is being held
C. will be held
D. has been held
2013.64.It was so noisy that we found it hard to ________ the conversation.
A. carry on
B. set for
C. turn on
D. go about