短文填词

There is a story which tells us about a good shop assistant.

A medicalstudent had to read a textbook________was

too________(昂贵) for him to buy.He couldn't get

one from the library and the o________copy he could

read was in a bookshop.So every afternoon, he went there to read

a little________a time.One day, however, he couldn't

find the book from its________(通常) place and

was about to leave when he n________an assistant

signing to him.To his s________, the assistant

pointed to the book, which was in a________(角落).

"I put it there so as not to be sold out, " said the assistant.

Then he left the student to c________his reading.Undoubtedly,

time spent in________a bookshop can be enjoyable.