— is the red dress? —I think it is Mary’sis red.A. What; Her B. Where; Hers C. Whose; H

问题补充：

— is the red dress? —I think it is Mary’s. is red.

A. What; Her B. Where; Hers C. Whose; Hers

答案：

解析：What什么；Where在哪儿；Whose谁的；her形容词性物主代词，她的；Hers名词性物主代词，她的。句意：这件红色连衣裙是谁的？——我认为是玛丽的。她的是红色的。结合语境可知选C。