来自程银波的问题
【英语youmusthavereadthisbook,didn'tyou为什么用didn'tyoumusthavereadthisbook,didn'tyou为什么用didn't,而不是mustn'tyou?haven'tyou?don'tyou?有mustn'tyou的说法吗?】
英语youmusthavereadthisbook,didn'tyou为什么用didn't
youmusthavereadthisbook,didn'tyou
为什么用didn't,而不是mustn'tyou?
haven'tyou?
don'tyou?
有mustn'tyou的说法吗?
1回答
2020-12-19 03:50