____ his twin brother, he _____ physical exercise.
16. As a work of ____ , we can't judge its value by appearances.
17. With the help of our class, Little Mike made such great progress in Chinese that he can write a 200-character ____ .
18. Deng Xiaoping was our general designer of reform and opening up to the outside world(改革开放). After he passed away, his ____were scattered over the sea.
19. Russia is a country which extends across _____ .
20. "What can I do for you?" or "May I help you?" is a pet phrase used by _____ .