____ is his hair?—It’s black.[ ]

I called Nina several times, but she didn’t answer. — Of course, she ____________ London for a visit.

We enjoy the ______ streets. We don’t like the noisy ones.

What do you think of the film called So Young? — I think this is the most wonderful film _______ I have ever seen.

Listen! Is it Linda singing in the next room? –No, it __________ be her. She is still in Shanghai.