When you read the book, you’d better

題目

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

句意：當(dāng)你看書時(shí)，最好在你有問題的地方做個(gè)標(biāo)記。where在這里引導(dǎo)地點(diǎn)狀語從句。故選D。