---Why don’t you go to the lecture room and listen to the talk? ---I hear there isn’t in it.
—Do you want ____for your son? —Yes, I do.
—What does your sister look like? —______________________.
—___________________? —They’re books.
—______,Tom, are these your books? —No, they aren’t .I think they are_______.
— Linlin , _____toy car is that? —It is______.