We all want to know who can________the physics problemYou know，it’s very difficult．

The year 1949 _____the birth of a new country—the People’s Republic of China

My brother is basketball. He spends most of his free time playing basketball every day

What happened to Tom yesterday? — Well, he was walking in the street when a stone flew up and hit _______

Our teachers always tell us more English in and out of class.