单项选择题

Lesson Ten is ______ one in this book.

A．most difficult
B．the most difficult
C．very difficult
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单项选择题
--What are these--______ .
A．These are books
B．It's a book
C．They are pens
单项选择题
--Can you speak English--Yes, but only ______ .
A．little
B．a little
C．a few
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