He must be in the park , ____ ?
A . must not he B . isn''t be C . needn''t he D . doesn''t he
He must be in the park , ____ ?
A . must not he B . isn''t be C . needn''t he D . doesn''t he
B。
在用 may be / must be / can be 表推断时，要根据人称使用后面的 be 动词。