---Can you go to the concert with us on weekends ? ---_________, but I have to babysit my sister.
Tom misses his brother very much and he is looking forward ____ him.
—What about going shopping together? —Sorry, I have a lot of homework ____.
He entered Peking University____. The people in his village are ____ him.
The soft music sounds ____. We are all listening ____.
—What happened? —They didn’t ____ each other and had a fighting.