—“Did you have any difficulty in today’s homework?”—“No, in fact I found ________.”
This is ____orange. It’s ____big orange. A. an, an B. a, a C, an, a D. a, an
This film isn’t _______ so that nobody is ________ in it.
We have been skating ________ two yeas ago.
--Would you mind passing me the book? --________. Here you are.
--How long have you read this book? --_________________.