The River Nile flood large areas, but now the water of it produce electricity.
A. was used to ; is used to
B. used to; used to
C. used to; is used to
D. was used; is using
网友回答
A. was used to ; is used to
B. used to; used to
(答案→)C. used to; is used to
D. was used; is using
解析:可联系答.案.网客服索取。