Jack Chan is very modest. He never _______.
| A．shows off | B．shows on | C．show off | D．show on |
A smile costs _________, but gives so much. So we should learn to smile.
| A．something | B．anything |
| C．nothing | D．everything |
My mother often tells me ______ the teachers carefully
| A．listen | B．listen to |
| C．to listen | D．to listen to |
Look, Jim _______ football on the playground.
| A．plays | B．was playing | C．play | D．is playing |
---Why did you laugh just now?
---Ted wanted to tell us _____ very funny story, but he forgot ______ ending himself.
| A．a , an | B．the , the | C．The , a | D．a , the |
We should always be _________ the people who have helped us in our lives .
| A．thanks for | B．thankful for |
| C．thanks to | D．thankful to |