When you get on a bus it’s polite to wait for turn. A. you B. yours C. your D. it’s

问题补充：

When you get on a bus, it’s polite to wait for turn.

A. you

B. yours

C. your

D. it’s

答案：

A. you

B. yours

(答案→)C. your

D. it’s

解析：修饰名词turn要用物主代词，your是形容词性物主代词，故本题选C。