问题

The Nile River ____ flood large areas but now the water ____ produce electricity. [ ]
A: used to; is used to
B:AIDU_
C: was used to; is used to
D: was used to; used to
B:AIDU_
C: was used to; is used to
D: was used to; used to
正确答案是:
同类题型
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What’s that girl’s name— __________ name is Linda.
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Father’s Day is coming. I’m thinking about __ .
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