This is a blue pen. That is _______ orange pencil.A. a B. an C. The
Tom didn’t give up studying ________________ he failed many times.
The problem is so ______________ that I can solve it ________________.
The ______ story made us very ______ .
We have to ______ the plan till next month because of the bad weather.
--I like to sing_______music. --Really? But I like music that I can dance______.