the door is closed and the lights are off.he_______ be at home.A.must B.can't C.can D.mustn't
问题描述：
the door is closed and the lights are off.he_______ be at home.A.must B.can't C.can D.mustn't
答
选B
must是肯定推测
cant是不可能的意思是否定推测
can是表肯定推测
mustn't是禁止不允许 不用于推测
答
B.can't 门被关上了和等熄灭了，他不可能在家 的意思
答
选B
那扇门是关着的而且灯也是关着得，他不可能在家。根据句子意思可知是否定句，排除A和C，D是不必要，不符合句子意思，选B，不可能
答
D
答
the door is closed and the lights are off. he_______ be at home. A. must B.can't C.can D.mustn't can't
这句话表推断.
确定的话用must be
确定不是的话用can't be
这句话前半句说门关着,灯熄了,所以肯定断定他不在.
所以选can't
答
英式英语D, 美式英语B和D都可以
答
速度选D啊啊同学，快写答案。祝你高分~！！