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  • 25.He got up so late in the morning so he ___________ working late at night.

    25.He got up so late in the morning so he ___________ working late at night.
    A.could have been
    B.must have been
    C.should have been
    D.would have been
    英語人氣:531 ℃時間:2020-04-14 12:58:29
    優(yōu)質(zhì)解答
    B.must have been must have done 表示對過去發(fā)生動作的肯定推測 a could只用于否定推測 c 該做而未做 d 用于虛擬語氣
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