The number of people invited to the party       200 but a number of them         ___absent for different reasons. 
#85851
A
were ; was
B
was ; were
C
was ; was
D
were ; were
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The number of students in our school   about 30 000 and  them study hard.
#86090
A
is;a large amount of
B
are;a number of
C
is;large amount of
D
is;a large number of
--What is that on the table?  --Oh, a set of ___________ on the table.
#43644
A
key is
B
keys are
C
keys is
D
key are