They are considering______ they should do the experiment .     
#34661
A
weather
B
that
C
whether
D
what
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We have a growing population and________we need more food.
#34167
A
even
B
besides
C
yet
D
therefore
Tom sacrificed his personal life ________ he could get ahead in his career.
#30690
A
in case 
B
as if
C
so that 
D
only if
_____but he still couldn’t understand the logical connection of the two subjects.
#30645
A
Having told many times
B
Having been told many times
C
He was told many times
D
Many times as he was told