The Nile River flood large areas but now the water produce electricity.
A. used to; is used to
B. used to; used to
C. was used to; is used to
D. was used to; used to
网友回答
(答案→)A. used to; is used to
B. used to; used to
C. was used to; is used to
D. was used to; used to
解析:考查固定句型。句义:尼罗河过去常常淹没大片地区但是现在被用来发电。固定句型used to do 过去常常(而现在不。。。) be used to do 被用来。。。,根据句意所以A正确。