---Where’s Jack? ---He has left a saying that he will be back in a minute.
--- _____ our teacher? ---She’s OK, now.
—Who ________ a pet in your class? —Many students ________.
—Are those your CDs?—No, ________ aren’t.
--- Where _________ Lily’s shoes? --- _________ shoes are under the bed.
Which of the underlined part has a different sound划线发音不同?