─You look so tired, Celia! ─Yes. I volleyball the whole afternoon.
—____dress is this?—It`s______.
—Maria, are those____ knives?—No, ____ knives are here.
—What class is he in?—He is in _____, _____.
Mr.Brown is ______America,but now he is ______China.
标出以下三个句子正确的升降调。What`s your phone number?Does your mom have long hair?That`s right.