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When you read the book, you'd better make a mark ____ you have any questions. [ ]A. at which B.

题目简介

When you read the book, you'd better make a mark ____ you have any questions. [ ]A. at which B.

题目详情

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

题型：单选题难度：中档来源：0103 月考题

答案

D

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