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
the door is closed and the lights are off. he_______ be at home. A. must B.can't C.can D.mustn'tcan'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