单项选择题

There are some new books in the school library. They are ______ books.()

A. child
B. childrens'
C. children
D. children's

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单项选择题

This story is more interesting than ______ two.()

A. other
B. the other
C. another
D. others

单项选择题

Silver is the best conductor of electricity, copper ______ it closely.()

A. followed
B. following
C. to follow
D. being followed

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