—Which of the caps will you take? --I’ll take _______,one for my father ,the other for my brother.
________ under the tree? No,they aren’t.
The baseball is _____ the floor _____ the desk.
--____________? --No, it isn’t.
--What are these? --_______ books.
如果你想知道对方姓什么时,你应该问_____________________________