1. My friend is driving at 45 kilometers (ǧÃ×) ¡¡¡¡¡¡¡¡ hour.     

A. a                     B. an               C. the              D. /

2. Lucy lived in Beijing from 2010 ¡¡¡¡¡¡¡¡ 2018.                  

A. on                    B. to               C. at               D. of  

3. Saturday is the ¡¡¡¡¡¡¡¡ day of a week.    

A. five                  B. seven            C. fifth            D. seventh