The book must ______ Tom.

She will leave her homework __________ the teacher’s desk after school today.[ ]

While the boy ______ down the street, the UFO _____ .

Do you know if Kitty ______ shopping this afternoon?— I’m not sure. But if she , I will let you know.

Excuse me, is there book by Mo Yan?—Yes. It’s on bookshelf over there.