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The ______ goal of the book is to help bridge the gap between research and teaching, particularly the gap between researchers and teachers.
What makes the space shuttle ______ is that it takes off like a rocket but lands like an airplane.
Don't _____ the camera _______ unless you are sure you can put it together.
(Staying up) all night, Tom (finished not only) the homework (but also read) many poems of his (favorite) poets.
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