-When shall we go to Hong Kong for holiday? - I am not sure yet. _______ this Sunday ______ next Saturday is ok.
A set of keys ____ in the library. Are they yours?
— Where _______your books? — _______ in the bookcase
— Does David have a ping-pong ball? —________. But he has some tennis balls.
Hi,Linda. This _____ my sister and those ______ my brothers.
_____ your brother_____ baseball?