My study of biology has ______ much of my spare time, but it has given me a great deal of enjoyment. 
#63787
A
taken off
B
taken down
C
taken up
D
taken away
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His uncle went abroad in 2010, and _______since.
#63782
A
has not been heard of
B
had not been heard of
C
had not heard of
D
has not heard of
Years of fighting have ______ the area ______.
#63754
A
remained; in ruins
B
left; in ruins
C
remained; in ruin
D
left; in ruin