__(John) book is lying on the table.

A) John

B) Johns'

C) John’s

D) Johns

__(Students) report cards will get ready by tomorrow.

A) Students'

B) Students

C) Student’s

D) Student

We went to see the____(children) game in the playground.

A) children

B) children’s

C) childrens

D) childrens'

__(Visitor) parking is not available here.

A) Visitor

B) Visitor’s

C) Visiors'

D) Visitors

I want to study the____(artist) pictures.

A) artist

B) artists'

C) artist’s

D) artists