Since 1993, when it passed a referendum approving casino gambling, the town of Riverside, Missouri, was using casino tax revenue to improve its streets, sewers, building, and other public works.
(a) approving casino gambling, the town of Riverside, Missouri, was
(C) approved casino gambling, the town of Riverside, Missouri, had been
(D) approving casino gambling, the town of Riverside, Missouri, had been
Ans D
my problem isn't with the answer but with the use of the form of the present perfect "has been using" as I was expecting "has used" instead.
Many thanks in advance
(a) approving casino gambling, the town of Riverside, Missouri, was
(C) approved casino gambling, the town of Riverside, Missouri, had been
(D) approving casino gambling, the town of Riverside, Missouri, had been
Ans D
my problem isn't with the answer but with the use of the form of the present perfect "has been using" as I was expecting "has used" instead.
Many thanks in advance












