11. Pages Book
Explanation: a book is made of pages and a cloth is made of yarns
(both pages and yarns are made of fibres).
12. ? Key
C Musical note
Explanation: in order to be played a violin needs a bow and to operate
a lock a key is needed.
13. Barley Cereal
Explanation: barley is a type of cereal and Parliament is a type of
14. Photosynthesis Sunlight
Explanation: photosynthesis requires sunlight and a concert requires
15. Acid Alkali
Explanation: acid and alkali are opposites and strict is the opposite of lax.