The number of people invited ____ fifty, but a number of them ____ absent for different reasons.
#85764
A
were , was
B
was , was
C
was , were
D
were , were
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E-mail,as well as telephones,  an important part in daily communication.
#86089
A
is playing
B
have played
C
are playing
D
play
Every means     , but none proved      .
#85757
A
have tried; a success
B
have been tried; successful
C
has tried; to be successful
D
has been tried; successful