There is __________backpack on the desk. It belongs to Tom.
-Yes, I do. She __________ Big Sister by us and I am afraid of her.
How long have you __________ this book?
The mobile phone has influenced people's life a lot since it __________.
-What do you think of the young woman singer?-It's hard to say, but her voice __________ beautiful.
To his surprise, Jack got a low __________ in the final exam.