The RiverNile flood large areas, but now its water produceelectricity.A.used to;
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The RiverNile ________ flood large areas, but now its water ________ produceelectricity.
A.used to; is used to
B.was used to; is used to
C.used to; uses to
D.was used to; is using to
试题答案
A
used to do 意为过去常常做某事be used to do 为use的被动用法