— Listen! Is that Linda singing in the next room?— No, it ________ be her. She is still in Shanghai.
Tom likes soccer very much. I often see him ______ soccer at school. A, to play B. playing C. play D. be playing
These cakes ________delicious! Can I have ________ one?
Jim with his teacher ______ over there.
—How many ______ are there in your school? —There are twenty-one.
—What _______ animals do you like? —I like koalas.