Many people agree that ______ knowledge of English is a must in _______ international trade today.

A．the, an B．a, 不填

C．the, the D．不填, the

The cakes are delicious. I'd like to have _______ third one as _______ second one I ate was too small.

A．the, the B．a, the

C．the, a D．a, a

________ England of those years was _______ England in peace.

A．不填, 不填 B．The, an

C．The, 不填 D．不填, an

- Did you happen to see _______ black and _______ white cat?

-Are they missing? I told you to take care of them.

A．a; 不填 B．the; 不填

C．the; the D．a; the

This is ______ story-book. It was written by Yang Hongying.

A．the B．a C．an

—Who’s that girl?

—You mean ______ one with long blond hair? That's Jack’s daughter.

A．a B．an

C．the D．不填

—Be careful ! There is _____dog lying on the ground.

—Thanks a lot.

A．a B．an

C．the D．/

Victor can play ______ piano. He can join the music club.

A．a B．an C．the

There is no living thing on __________moon.

A．the B．a C．不填

_______girl riding a bike is ________university student.

A．A, an B．The, an

C．A, the D．The, a