needn't
他已經(jīng)知道了,你不必告訴他了.
mustn't是不可以
you ___tell him about it.because he has know it.要用mustn't 還是needn't
you ___tell him about it.because he has know it.要用mustn't 還是needn't
英語人氣：885 ℃時(shí)間：2020-04-08 22:32:41
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