.The horses________each other________the first prize in the match. 
#4781
A
competed against; for
B
competed against; to
C
completed against; for
D
completed; to get
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The boss insisted that every minute ______ made full use of ______ the work well.
#4535
A
be ; to do
B
was ; doing
C
be ; doing
D
was ; to do
Fill in the blanks with articles where       .
#4567
A
necessary
B
necessarily
C
is necessary
D
it necessary