helen is singing in the next room .-It--be helen.she has gone to _英语解答

helen is singing in the next room .-It--be helen.she has gone to Beijing.a can not b must not c may

人气：113 ℃　时间：2019-08-18 23:28:53

解答

答案不是B,你找一个英语老师问问,就知道我说的对.
选A
can not 不可能
must not禁止（只有这一种意思,无不可能之意）
may not也许不