请帮忙填空:Which of these do you think is ---useful invention?

请帮忙填空:Which of these do you think is ---useful invention?

A;the more B;the second more C;most D;the second most

问答/218℃/2024-09-11 08:34:53

优质解答:

A 两个比较,并特指其中更有用的一个~

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