单项选择题

When you read books, you had better make marks（）you have questions.

A. where
B. in where
C. at which
D. which

<上一题 目录 下一题>
热门 试题

填空题
miss the city
单项选择题
Why can’t Jane type the letter for the man（）

A. Because she is on vacation.
B. Because she doesn’t want to.
C. Because she is working busily.
D. Because she is studying for exam.
相关试题