At present , the butter factory is still polluting the river though it _____to stop.
#100076
A
ordered
B
has ordered
C
will be ordered
D
has been ordered
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Computers          in offices and homes since 1970s.
#101154
A
have been used
B
had been used
C
was
D
has been used
The dish _____ nice, but the milk _____ sour.
#103726
A
is smelt, is smelt
B
is smelt, smells
C
smells, is smelt
D
smells, smells
“What place is it?” “Haven’t you found out we _____ back where we ______?”
#104182
A
were, had been
B
have been, are
C
are, were
D
are, had been