It is (a/an) PEN
It is A pen
It is (a/an) RED PENCIL CASE
It is A red pencil case
It is (a/an) RULER
It is A ruler
It is (a/an) SHARPENER
It is A sharpener
It is (a/an) GREEN apple
It is A green apple
It is (a/an) WHITE notebook
It is A white notebook
It is (a/an) BOOK
It is A book
It is (a/an) DESK
It is A desk
It is (a/an) ELEPHANT
It is AN elephant
It is (a/an) EGG
It is AN egg
It is (a/an) ORANGE
It is AN orange
It is (a/an) pencil
It is A pencil
It is (a/an) SCHOOLBAG
It is A schoolbag
It is (a/an) APPLE
It is AN apple
It is (a/an) UMBRELLA
It is AN umbrella