You’d better not ________ the radio, or you’ll not be able to put it back together again.[ ]

She has made a _____ to be a doctor after finishing her education.

Who cooked the_______dishes? —Maybe Evens did.

He is not an easy man _____.

In the back of our classroom stand some bookshelves on which are various magazines and reference books, making reading materials more 　　　　to the students.