Among millions of people who watched television coverage of the rescue of the Chile’s first miner _________U.S. President Barack Obama, who hailed the operation as an inspiration to the world.   
#74230
A
is
B
were
C
are
D
was
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The medicine has begun to ___
#81214
A
have its work
B
take its work
C
do its work
D
show its work
. Why didn’t you come? Haven’t you __________?
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A
allowed
B
promised
C
invited
D
agreed
— Whose Chinese vase is it?— I have no idea, but I’m pretty sure it _______ the old lady.
#66642
A
doesn’t belong to
B
belongs to
C
isn’t belonging to
D
belonged to