题目：
When you read the book, you’d better make a mark _____ you have any questions. A.at which B.at where C.the place D.where
答案：
D
解析：
句意：当你看书时，最好在你有问题的地方做个标记。where在这里引导地点状语从句。故选D。
题目：
When you read the book, you’d better make a mark _____ you have any questions. A.at which B.at where C.the place D.where
D
句意：当你看书时，最好在你有问题的地方做个标记。where在这里引导地点状语从句。故选D。