All the exam papers _______ ,the teacher sent the class home.A.having been handed in B.having hands in C.handing in D.being handed in
问题描述：
All the exam papers _______ ,the teacher sent the class home.
A.having been handed in B.having hands in C.handing in D.being handed in
答
A这是独立主格用法，D肯顶不行进行时了 BC不是被动
懂了吧
chanrry
答
A
答
A
还是过去分词作定语
因为试卷是被上交
所以用 been handed
因为试卷已经被交了
老师才让同学们回家
所以用完成时 having been done
综上所述
选A
答
A
All the exam papers having been handed in 做独立主格
译为：所有试卷都被交上来了，老师下课了
have been handed in 为被动语态的现在完成时形式，又因为整道题为一句话，故前半句做独立主格，所以要将have变为having