[ Grammar ]
One reason for dams ………… is to produce electricity.
A. are built
B. have built
C. being built
D. were built
Select your answer:

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Grammar › ViewRita is 20 years old. Sam is also 20.
A. Rita is as old as Sam.
B. Rita is older than Sam.
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Grammar › View
He _________________________ to Cape Town before 1997.
A. wasn’t been
B. has been
C. hadn’t been
D. hasn’t been
