When I walked past the park, I saw some old people _______ Chinese Taiji.
—________ does your mother go to work?— She often goes there ______ the bus.
The pair of glasses over there ________ cool. Bring ________ to me and let me have a look.
This accident (事故) happened (发生) ________ a winter afternoon.
单词辨音
—I am going to Sanya for my holiday tomorrow.—_____________.