问题

While reading, you’d better make a mark ___ you have any questions.

A:on which
B:at which
C:the place where
D:where

正确答案是：

同类题型

Has Jane done the washing yet—You cannot her to do such a thing.

Why do many people like to ride bikes—-Because bikes not only need ________ space, but also cause _________accidents.

What a beautiful girl your daughter is!—______．

________ others whenever you can and you will make the world a nicer place tolive in

Compared with the generation of our grandparents, who grew up in an age when people were _____ in almost every kind of materials, we should be content with the abundant supply.