Question

'The book is on the shelf 'Is a correct usage
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Answer 1

Answer:

"On" means that "it is on top of something" (like a tree). "In" means that "it is inside of something" (like a cupboard). On the shelf also means: Not in active use or consideration; For eg: We'll have to put some of those plans on the shelf for a while.

Answer 2

Answer:

yes it is correct correct