In May 2011, Americans spent 53 billion minutes on Facebook, ______ it the most popular U.S. website.
#68432
A
making
B
made
C
to make
D
having made
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________ he seems to know everything.
#71483
A
Young as he is, yet
B
Young as he is
C
As he is young, but
D
Though he is young, but
In the global economy, a new drug for cancer, it is discovered, will create many economic possibilities around the world.
#67662
A
whatever
B
whoever
C
wherever
D
whichever