Where is your father?—He isn’t here. He __________ Yushu to help the people in trouble.

Why not take ____ umbrella with the sign “Made in China”? It’s ____ useful one.— What ____ good advice.

Dad, could you buy me a computer like this?—Of course, we can buy_________one than this, but_________it.

“______ can you stay here in the summer holidays?” “For two weeks.” 　　 [ ]

Is this _______ watch, Lily?— Yes, my father bought it for me yesterday.