—Is this book? —Yes,it’s English book.A.a;a B.a;an C.art;an
—I felt very __________ when I was having classes this morning.—Did you stay up very late last night?
—Mom, I have great trouble with my math. —Never __________ and you will learn it well.
—I used to be quiet but now I’m very outgoing. —Oh, you __________ a lot.
People always __________ dogs as their best friends.
Do you know how to learn English well as _________ second language?