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
推荐题目
That scientist ________ work is successful has been made a model worker.
#66798
A
which
B
who
C
that
D
whose
_______ we are sure about is the need to prevent children from being spoiled.
#72997
A
What
B
Which
C
Whether
D
That
The Education Department says that school safety has set off alarm bells with frequent reports of serious accidents ________ students got injured or killed.
#66900
A
after which
B
in which
C
by which
D
for which
_______ there were only five soldiers left at the front,______ they went on fighting.
#41378
A
Because;so
B
If;and
C
Though;but
D
Though;/