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Mathematics and French paper are difficult.怎么写反义疑问句?

2019-05-23

Mathematics and French paper are difficult.怎么写反义疑问句?
优质解答
Mathematics and French paper are difficult,aren't they?
paper指论文,可用做复数哦
Mathematics and French paper are difficult,aren't they?
paper指论文,可用做复数哦
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