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E-mail, as well as telephones, ______ an important part in daily communication.
#85713
A
is playing
B
have played
C
are playing
D
play
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Four-fifths of the crop ______. 
#85690
A
are ruined
B
was ruined
C
were ruined
D
have been ruined
The number of students in our school_________ more than 2000.
#43978
A
is
B
are
C
has been
D
Was
80,000 yuan ________ a lot of money, but it’s far less than we need.
#43940
A
is
B
are
C
were
D
was
. Both bread and butter ______ on sale in this shop.
#86077
A
is
B
are
C
have
D
has
— Would you mind if I sing here?—           . Look at the sign. It says “Be Quiet”.
#43859
A
Of course not.
B
Better not.
C
Not at all.
D
I don’t mind.