These books are are in bags.A. my. You YouB. My Yours yourC. mine Your YoursD. mi

问题补充：

These books are . are in bags.

A. my. You, You

B. My, Yours, your

C. mine, Your, Yours

D. mine, Yours, your

答案：

A. my. You, You

B. My, Yours, your

C. mine, Your, Yours

(答案→)D. mine, Yours, your

解析：句意：这些书是我的，你的书在你的书包里。第一空作表语所以只能用名词性物主代词；故排除AB；第二空做主语也只能用名词性物主代词，第三空作定语只能用形容词性物主代词，故选D。