To everyone's surprise, the 5-year-old boy_______ play the piano so well.
A smile costs _________, but gives so much. So we should learn to smile.
My mother often tells me ______ the teachers carefully
Look, Jim _______ football on the playground.
---Why did you laugh just now?---Ted wanted to tell us _____ very funny story, but he forgot ______ ending himself.
We should always be _________ the people who have helped us in our lives .