A hard-working man__ _______become a great scientist, but a great scientist__________be a hard-working man.
Bob is _______ an English class. His teacher is talking ________ English.
— ________ your friend? —The boy in front of the old man.
Yingying often _____ hamburgers, French fries and Coke and her mother often cooks _______ Chinese food for them.
When he was free, he went down to the small river behind the factory and tried ____some fish.
Thank you for ______my grandpa when I was away.