When you read the book,you'd better make a mark at the spot _____ you have any questions.A.at which B.at where C.the place where D.where

问题描述:

When you read the book,you'd better make a mark at the spot _____ you have any questions.
A.at which B.at where C.the place where D.where

A和D都行
先行词是spot
定语从句you have any questions
引导词可以用where
也可以用at which: at which就是at the spot的意思
如果去掉at the spot,只能用where,
where引导的是地点状语从句。
B和C结构不对的。

应该B吧 A排除

When you read the book,you'd better make a mark at the spot _____ you have any questions.
A.at which B.at where C.the place where D.where
选D
where引导一个定语从句

d
回答过于简略