When the exam is held ,the only sound you can hear is the sound of the papers’（）A being turned B to be turned C turned D having been turned
问题描述：
When the exam is held ,the only sound you can hear is the sound of the papers’（）
A being turned B to be turned C turned D having been turned
答
A
答
选A,the papers'是名词所有格,后应跟名词形式,感官动词hear和整句时态可把D排除