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

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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
单项选择题
--How did Bob do in the exams this time --Well, his father seems ______ with his results.（）

A. pleasing
B. please
C. pleased
D. to please
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