Ⅰ.单句语法填空
1．The hotel has been ordered to close because it is overrun by ________ (mouse) and rats.
mice [根据后面的rats可知，空白处要填入mouse的复数形式mice。]
2．The system reflects the seasonal characteristics of annual natural ________ (phenomenon) and farming activities.
phenomena [根据后面的activities可知，空白处要填入phenomenon的复数形式phenomena。]
3．Police were reported to have seized all ________(copy) of this morning's edition of the newspaper.
copies [根据句意可知，空白处要填入copy的复数形式copies。]
4．Here he sat, with his pipe between his ________(tooth) and both hands resting on his knees.
teeth [根据句意可知，空白处要填入tooth的复数形式teeth。]
