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

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单项选择题

The population of India is much larger than（）of Sweden.

A. that
B. such
C. what
D. so

单项选择题

After final examination, college students who have left their homes for a long time look forward to（）as soon as possible.

A. be going home
B. go home
C. be gone
D. going home

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