While reading, you'd better make a mark you have any questions.A. on whichB. at whereC. t

发布时间：2020-08-15 01:08:37

While reading, you'd better make a mark      you have any questions.
A. on which
B. at where
C. the place where
D. where

网友回答

A. on which
B. at where
C. the place where
(答案→)D. where
解析：这是一个定语从句，从句中缺表示地点的状语，所以选D。
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