Many teens don't get enough sleep because they have too much homework to do, which ________ them up at night.
#11120
A
makes
B
breaks
C
turns
D
keeps
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_________ teachers are present today, and __________ them is 300.
#14474
A
A great many; a number of
B
A number of; the number of
C
A dozen of; a great many
D
The number of; a number of
The police wondered________ of them is________ such a traffic accident.
#12980
A
whom; blaming to
B
who; to be blamed on
C
who; to be blamed for
D
which; to blame for