根据句子意思，用括号中所给单词的适当形式或正确时态填空。
The young man with glasses teaches        (我们) Chinese.
He    (做) his homework late last night.
Who's        (高), Lucy or Lily?
Ann had her        (十) birthday in China. She felt very happy.
They go to        (上班) at eight every day.
Children should speak to old people ______________ (polite)．
The time is too short．It’s ____ (possible)for Daniel to finish this work．
Stephen spends about half an hour  ____ (swim) every Saturday afternoon．
Watch_______________(care), and you find the differences between them.
I’m sorry I didn’t hear you because I ____(listen) to music.