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11. There has been a decline _______ the number of people borrowing from public libraries.
A. on
B. in
C. with
D. at
12. The harder a student studies, _______.
A. the more his body gives off heat
B. his body gives off more heat
C. the more heat does his body gives off
D. the more heat his body gives off
13. When she heard the bad news, she _______completely.
A. broke away
B. broke down
C. broke out
D. broke through
14. The clerk muttered under his breath as he brought the _______ the tenth pair of shoes.
A. client
B. attorney
C. agent
D. consumer
15. Association refers to _______ the material we want to remember and _______ it to something we remember accurately.
A. taking … relating
B. take … relate
C. taking … relate
D. take … relating