______ come into leaf or bloom is obviously a sign of spring. 
#69125
A
Trees
B
The trees
C
That trees
D
What trees
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The time of the last term , ________full use of ________the college entrance  examination , will be very important to every senior three student .
#68162
A
when made ; preparing for
B
if made; to prepare for
C
that made; to prepare for
D
whether is made; preparing for
Those were the graduate assistants ______ to do the research work in the lab.
#73726
A
to whom it was their responsibility
B
whose responsibility there was
C
whose responsibility was
D
of whom with the responsibility