Ⅰ.单句语法填空
1．The boy was waving (wave) to us when we turned back to say goodbye to him.
2．Scientists have many theories about how the universe came(come)into being.
3．She had to walk home with her bike stolen(steal)．
4．The suggestion made(make) by the foreign expert was adopted by the manager.
5．Having failed(fail) many times，he didn't lose heart.
6．It was difficult to calm down the football fans.
7．By no means can theory be separated from practice.
8．Rockets are used in the exploration(explore) of the universe.
9．She sang to the music with her hand waving(wave) gently.
10．The police used unnecessary violence(violent) on the crowd.
