1. 看！他们在操场上正玩得开心呢！
   Look! They ______ ______ ______ ______ ______ on the playground.
2. 将来老师们不会用粉笔在黑板上写字了。  
   Teachers  ______ write on the blackboard with chalk ______ ______ ______ .
3. 你正在为期中考试做好准备吗？
   Are you ______ ______ ______ the mid- term exam?
4. 长江比泰晤士河宽。
   The Changjiang River is ______ ______ the River Thames.
5. 香港在中国的南方。
     Hong Kong is ______ ______ ______ ______ China.