This is a school____ children____3-7.[ ]

It was only in K. Rowling completed the first Harry Potter story, _______ was also known as Harry Potter and the Sorcerer’s Stone.

I’m too busy. Could you do_______ to help me?—Of course. I can do_______ for you if you want me to.

Uncle Wang is going to Beijing. He is packing his suitcase ____ clothes. [ ]

She has to study_____ a Chinese test. [ ]