问题
Perhaps John’s not in. —–_______. Look, the light’s on.
A:Yes, he can be at home.
B:No, he couldn’t go out.
C:Yes, he must be at home.
D:No, he needn’t go out.
B:No, he couldn’t go out.
C:Yes, he must be at home.
D:No, he needn’t go out.
正确答案是：
