Theirs are new.(划线部分提问)

Billy and Kitty are from New York.(划线部分提问) these lunch boxes are (theirs).括号里的theirs划线提问. Those apples are (theirs) 对括号部分提问 The butterflies are theirs.对theirs提问. The new pay phone are on Fifth Avenue(对划线部分提问)（划线部分是on Fifth billy and kitty are from new york.(对划线部分提问） These are photo.划线部分提问.划线部分是:photo They are (books)对划线部分提问 You are so generous.划线部分提问 They are twins划线部分提问 They are black?对划线部分提问. Her ruler is new 对划线部分提问 划线部分是new