15、You can do it all by　　　　　　　　 . (you)

14、The　　　　　　　　　　 boy is very strong. (seven)

13、Mr. Brown is wearing a pair of　　　　　　　　　　 . (glass)

12、Meimei learnt to speak English by　　　　　　　 . (she)

11、I know one of the　　　　　　　　　 . (boy)

10、Autumn is the　　　　　　　　　 season of the year. (three)

9、Is　　　　　　　　　 bike red or black? (he)

8、I often go to work on　　　　　　　　 . (foot)

7、People often mistake　　　　　　　　 for each other. (we)

6、Chinese is one of the most important　　　　　　　　　 in the world. (language)