— A number of volunteers willing to work in poor areas in the western part of China. — Yes, the number is getting .
—What’s your favorite ________? —It’s science.
—______ your brother ______ a basketball? —Yes, he does.
—I can’t find my notebook, mom. _______ is it? —Peter, it’s under the chair.
—Is this ________ key, Tom? —No, that one is ________.
.—Is this your book, Jane? —_______. Thank you!