单项选择题

There ______ some books and a pen on the desk.（）

A. is
B. are
C. be
D. was

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单项选择题

Paul doesn't have to be made ______. He always works hard.（）

A. learn
B. to learn
C. learned
D. learning

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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