【答案】— ________ maths book is that? ( )

— ________ maths book is that? ( )

— It's ________.

A. Whose; him B. Whose; his C. Who's; yours

【答案】

B

【解析】

表示“谁的”用whose；答语中横线之后没有名词，故横线上填名词性物主代词，him是宾格，his和yours是名词性物主代词。