there is /there are

................. a book

• there is

• there are

............ books

• there is

• there are

............ a chair

• there is

• there are

............ chairs

• there is

• there are

............ a classroom

• there is

• there are

............ a board

• there is

• there are

............ pencils

• there is

• there are

............ a clock

• there is

• there are

............ tables

• there is

• there are

............ window

• there is

• there are