Ответ:

ex 1

art-10

cafeteria-13

calculator-7

classroom-5

desk-18

English-1

laboratory-12

library-16

math-8

music-2

pucked lunch-6

PE-3

principal-11

school-15

school bag-9

science-12

teacher-17

toilets-4

ex 2

director

library

math

musician

Объяснение:

Вот так по моему.